Please answer the following question: Information: - Acrobatics (from Greek "akrobate", "walk on tiptoe, strut") is the performance of extraordinary feats of balance, agility, and motor coordination. It can be found in many of the performing arts, sports (sporting) events, and martial arts. Acrobatics is most often associated with activities that make extensive use of gymnastic elements, such as acro dance, circus, and gymnastics, but many other athletic activities such as ballet and diving may also employ acrobatics. Although acrobatics is most commonly associated with human body performance, it may also apply to other types of performance, such as aerobatics. - Gymnastics is a sport involving the performance of exercises requiring balance. strength, flexibility, agility, endurance and control. The movements involved in gymnastics contribute to the development of the arms, legs, shoulders, chest and abdominal muscle groups. Alertness, precision, daring, self-confidence and self-discipline are mental traits that can also be developed through gymnastics. Gymnastics evolved from exercises used by the ancient Greeks that included skills for mounting and dismounting a horse, and from circus performance skills. - Aerobatics (a portmanteau of "aerial-acrobatics") is the practice of flying maneuvers involving aircraft altitudes that are not used in normal flight. Aerobatics are performed in airplanes and gliders for training, recreation, entertainment, and sport. Additionally, some helicopters, such as the MBB Bo 105, are capable of limited aerobatic maneuvers. An example of a fully aerobatic helicopter, capable of performing loops and rolls, is the Westland Lynx. The term is sometimes referred to as "acrobatics", especially when translated. - Diving is the sport of jumping or falling into water from a platform or springboard, usually while performing acrobatics. Diving is an internationally recognized sport that is part of the Olympic Games. In addition, unstructured and non-competitive diving is a recreational pastime. - Acro dance is a style of dance that combines classical dance technique with precision acrobatic elements. It is defined by its athletic character, its unique choreography, which seamlessly blends dance and acrobatics, and its use of acrobatics in a dance context. It is a popular dance style in amateur competitive dance as well as in professional dance theater and in contemporary circus productions such as those by Cirque du Soleil. This is in contrast to acrobatic, artistic and rhythmic gymnastics, which are sports that employ dance elements in a gymnastics context under the auspices of a governing gymnastics organization (such as FIG) and subject to a Code of Points. Acro dance is known by various other names including "acrobatic dance" and "gymnastic dance", though it is most commonly referred to simply as "acro" by dancers and dance professionals. - A circus is a company of performers that may include clowns, acrobats, trained animals, trapeze acts, musicians, hoopers, tightrope walkers, jugglers, unicyclists, as well as other object manipulation and stunt-oriented artists. The term 'circus' also describes the performance which has followed various formats through its 250-year modern history. Philip Astley is credited with being the 'father' of the modern circus when he opened the first circus in 1768 in England. Early circuses were almost exclusively demonstrations of equestrian skills with a few other types of acts to link the horsemanship performances. Performances developed significantly through the next fifty years, with large scale theatrical battle reenactments becoming a significant feature. The 'traditional' format, whereby a ringmaster introduces a varied selection of acts that mostly perform choreographed acts to traditional music, developed in the latter part of 19th century and continued almost universally to be the main style of circus up until the 1970s. - Pole dance is a form of performance art , historically associated with strip clubs and night clubs , which combines dance and acrobatics centered on a vertical burlesque pole . This art form has recently gained popularity as a form of fitness and mainstream entertainment , practised by many enthusiasts in gyms and in dedicated dance studios . A wide range of amateur and professional competitions are held in many countries around the world . Since the mid 2000s , promoters of pole dance fitness competitions have been trying to change peoples '' perception of pole dance and to promote it as a non-sexual form of dance and acrobatics . Pole dance requires significant strength , flexibility and endurance . Pole dance proper involves athletic moves such as climbs , spins , and body inversions using the limbs to grip . Upper body and core strength are required to attain proficiency , and rigorous training is necessary . Pole dance is now regarded as a form of exercise which can be used as both an aerobic and anaerobic workout . Recognized schools and qualifications are now commonplace . - Dance is a performance art form consisting of purposefully selected sequences of human movement. This movement has aesthetic and symbolic value, and is acknowledged as dance by performers and observers within a particular culture. Dance can be categorized and described by its choreography, by its repertoire of movements, or by its historical period or place of origin. - Choreography is the art or practice of designing sequences of movements of physical bodies (or their depictions) in which motion, form, or both are specified. "Choreography" may also refer to the design itself. A choreographer is one who creates choreographies by practicing the art of choreography, a process known as "choreographing". Choreography is used in a variety of fields, including musical theater, cheerleading, cinematography, gymnastics, fashion shows, ice skating, marching band, show choir, theatre, synchronized swimming, cardistry, video game production and animated art. In the performing arts, choreography applies to human movement and form. In dance, choreography is also known as dance choreography or "dance composition". - Martial arts are codified systems and traditions of combat practices, which are practiced for a number of reasons: as self-defense, military and law enforcement applications, mental and spiritual development; as well as entertainment and the preservation of a nation's intangible cultural heritage. After reading the paragraphs above, we are interested in knowing the entity with which 'pole dance' exhibits the relationship of 'sport'. Find the answer from the choices below. Choices: - cheerleading - diving - gymnastics - martial arts - music - sport - swimming
A:
gymnastics