Information: - In mathematics, the Menger sponge (also known as the Menger universal curve) is a fractal curve. It is a three-dimensional generalization of the Cantor set and Sierpinski carpet, though it is slightly different from a Sierpinski sponge. It was first described by Karl Menger in 1926, in his studies of the concept of topological dimension. - IMAGE (from Imager for Magnetopause-to-Aurora Global Exploration), or Explorer 78, was a NASA MIDEX mission that studied the global response of the Earth's magnetosphere to changes in the solar wind. It was launched March 25, 2000 by a Delta II rocket from Vandenberg AFB and ceased operations in December 2005. - In information technology, lossy compression or irreversible compression is the class of data encoding methods that uses inexact approximations and partial data discarding to represent the content. These techniques are used to reduce data size for storage, handling, and transmitting content. Different versions of the photo of the cat above show how higher degrees of approximation create coarser images as more details are removed. This is opposed to lossless data compression (reversible data compression) which does not degrade the data. The amount of data reduction possible using lossy compression is often much higher than through lossless techniques. - The Mandelbrot set is the set of complex numbers "c" for which the function formula_1 does not diverge when iterated from formula_2, i.e., for which the sequence formula_3, formula_4, etc., remains bounded in absolute value. The set is closely related to the idea of Julia sets, which produce similarly complex shapes. Its definition and name are due to Adrien Douady, in tribute to the mathematician Benoit Mandelbrot. - A fractal is a mathematical set that exhibits a repeating pattern displayed at every scale. It is also known as expanding symmetry or evolving symmetry. If the replication is exactly the same at every scale, it is called a self-similar pattern. An example of this is the Menger Sponge. Fractals can also be nearly the same at different levels. This latter pattern is illustrated in small magnifications of the Mandelbrot set. Fractals also include the idea of a detailed pattern that repeats itself. - Fractal compression is a lossy compression method for digital images , based on fractals . The method is best suited for textures and natural images , relying on the fact that parts of an image often resemble other parts of the same image . Fractal algorithms convert these parts into mathematical data called '' fractal codes '' which are used to recreate the encoded image . After reading the paragraphs above, we are interested in knowing the entity with which 'fractal compression' exhibits the relationship of 'subclass of'. Find the answer from the choices below. Choices: - c - content - curve - data compression - definition - encoding - exploration - fractal - idea - image - information - mathematics - mission - name - pattern - rocket - scale - sequence - set - show - symmetry - tribute - wind
data compression

Information: - A holding company is a company that owns other companies' outstanding stock. The term usually refers to a company that does not produce goods or services itself; rather, its purpose is to own shares of other companies to form a corporate group. Holding companies allow the reduction of risk for the owners and can allow the ownership and control of a number of different companies. - The Colombian-German Air Transport Society, or SCADTA, was the world's second airline, and the first airline in the Americas, operating from 1919 until World War II. After the war, SCADTA merged with Colombian regional carrier Colombian Air Service, or SACO. Together, SCADTA and SACO formed Avianca - Aerovias Nacionales de Colombia, the Colombian flag-carrier. After Avianca was purchased by Brazilian entrepreneur German Efromovich's company Sinergy in 2004, the name of the company was changed to Airline of the American Continent ("Aerovias del Continente Americano") - Avianca). Avianca still operates to this day. - Avianca S.A. (acronym in Spanish for "", Airways of the American Continent) has been the national airline and flag carrier of Colombia since 5 December 1919, when it was initially registered under the name SCADTA. It is headquartered in Bogota, D.C. with its main hub at El Dorado International Airport. Avianca also comprises a group of seven Latin American airlines, whose operations are combined to function as one airline using a code sharing system. Avianca is the largest airline in Colombia and second largest in Latin America. Avianca together with its subsidiaries has the most extensive network of destinations in Latin America. It is wholly owned by Synergy Group S.A., a South American holding company established by German Efromovich and specializing in air transport. It is listed on the Colombia Stock Exchange. - Synergy Group Corp. is a South American conglomerate created and owned by German Efromovich, an entrepreneur holding multiple citizenship of Brazil, Colombia and Poland. The group is headquartered in Rio de Janeiro, Brazil. It operates several airlines in South America, among which are Avianca Holdings, with a 66.66% stake, and is active in the exploration of oil and natural gas throughout the region. Additionally, it operates hydroelectric power plants, participates in the construction of telecommunications infrastructure, shipbuilding and technical inspections, radiochemistry, radiopharmaceuticals, agriculture and hospitality. - Avianca Guatemala is headquartered in Guatemala City . It is now a subsidiary of Avianca . - El Dorado International Airport is an international airport located in Bogota, Colombia. It is ranked among the world's 50 busiest airports in terms of: passenger traffic (ranked third in Latin America with 25,009,483 passengers in 2013), cargo traffic (ranked first in Latin America (33rd worldwide) with 622,145 metric tons in 2013) and traffic movements (ranked second in Latin America (45th worldwide) with 304,330 aircraft movements in 2011). As such, it is the largest airport in Colombia and the main international and domestic air gateway in the country, serving as the main and largest hub for Avianca (the national flag carrier of Colombia), Copa Airlines Colombia, LATAM, Satena, EasyFly and other cargo companies. It is managed by Operadora Aeroportuaria Internacional (OPAIN), a consortium composed of Colombian construction and engineering firms and the Swiss company Flughafen Zurich AG. After reading the paragraphs above, we are interested in knowing the entity with which 'aviateca' exhibits the relationship of 'parent company'. Find the answer from the choices below. Choices: - avianca - gateway - stock - synergy group
synergy group