Sierra Bayas Group is a group of Neoproterozoic-aged sedimentary rock formations in Buenos Aires Province, Argentina.
 The group crops out in the central and northwestern parts of the Tandilia System, a chain of hills made up by of ancient rocks.
 The nearby Cerro Negro Formation aside, Sierra Bayas Group contains the oldest sedimentary formations in Argentina that have not been subject to significant metamorphism or deformation.
 It was formerly grouped together with Cerro Negro Formation and the Ordivician Balcarce Formation into La Tinta Group.
 Sierra Bayas Group and the former La Tinta Group have equivalents in Southern Africa, in La Tinta Group in particular is considered equivalent to the Nama Group found in Namibia and South Africa.
 From top to bottom Sierra Bayas Group is subdivided Loma Negra, Olavarría, Cerro Largo, Colombo and Villa Mónica formations.
 Sierra Bayas Group has a thickness of 175 meters and the age its rocks range from Tonian to Ediacaran.
Radio Sonora is the state radio network of the Mexican state of Sonora.
 It serves 95% of the state through its 28 FM transmitters, making it the second-largest state radio network in Mexico.
Sugar was an American alternative rock band of the early 1990s.
 Formed in 1992, they were led by the singer and guitarist Bob Mould (ex-Hüsker Dü), alongside bassist David Barbe (ex-Mercyland) and drummer Malcolm Travis (ex-Human Sexual Response).
Multi-male groups, also known as multi-male/multi-female, are a type of social organization where the group contains more than one adult male, more than one adult female, and offspring.
 Within Order Primates, it is the most common social group type, with group sizes ranging from 10 to 100 individuals.
 Large groups of primates are called "troops."
 Examples of species that can be categorized under this type of social organization include many diurnal lemurs, langurs, and most members of the family Cebidae.
State Radio is a Boston-based rock trio comprising singer and primary songwriter Chad Stokes Urmston (also a member of Dispatch), bassist Chuck Fay, and, formerly, drummer Michael Najarian.
 The band's songs focus on social and political issues and have been musically described as a combination of reggae, punk and rock.
The Chilhowee Group is a sedimentary body composed of early Cambrian siliciclastic sedimentary rocks which crop out along the eastern margin of the Blue Ridge province in Maryland and Virginia.
 They represent a rift to passive margin sequence, with mostly coarse, feldspathic sandstones and conglomerates in the lower member and shales and phyllite in the upper members.The Chilhowee Group contains four formations; the Loudoun, Weverton, Harpers and Antietam.
<ref>[http://pubs.usgs.gov/bul/b2123/paleo.html Southworth, Another name for the Harpers formations is the Hampton formation, and the Antietam Formation is also known as the Erwin Formation.
 The Hampton Formation has minor economic importance in the area near the James River Face Wilderness.
 As of 1982 there were three quarries operating near the James River Face Wilderness.
 Those quarries produced roofing shale, light weight aggregate, and various materials for brick making.
 The Antietam Formation also had a minor economic importance, particularly from 1945 up until 1966.
 There were three quarries producing crushed quartzite, which wa used to produce concrete aggregates, road metal and railroad ballast (Brown 1982).
Ostariophysi is the second-largest superorder of fish.
 Members of this superorder are called ostariophysians.
 This diverse group contains almost 8,000 species, about 28% of known fish species in the world and 68% of freshwater species, and are present on all major continents except Antarctica.
 They have a number of common characteristics such as an alarm substance and a Weberian apparatus.
 Members of this group include fish important to people for food, sport, the aquarium industry, and research.
The Morro Solar Group (Spanish: "Grupo Morro Solar" ) is a stratigraphic group of Mesozoic-aged sedimentary formations exposed near Lima, Peru.
 The groups formations more specifically of Berriasian and Valanginian age (Early Cretaceous) and overlies the Jurassic Puente Piedra Group and underlies the Cretaceous Pamplona Formation.
 The Morro Solar Group is intruded by sills of andesitic composition.
 Together with the Casma and Imperial Groups, the Morro Solar Group contains clastic volcanosedimentary material derivative of the Mesozoic Casma Volcanic Arc.
 The formations of the group hosts mostly local fossils which do not have counterparts for biochronological correlation in other regions.
The Piney Creek South Site is a prehistoric rock art site located on the south side of Piney Creek in Piney Creek Ravine State Natural Area in Randolph County, Illinois.
 The site consists of two groups of petroglyphs drawn on a sandstone rockshelter.
 The petroglyphs most likely date from the Late Woodland period, which lasted from 450 to 900 A.D.
 The larger petroglyph group contains ten designs: four anthropomorphs, a quadruped resembling a deer, three crosses, and two pits.
 The four designs in the smaller group include two anthropomorphs, a group of pits extending from an anthropomorph's head, and a pecked area.
 Several of the anthropomorphs appear to have wings, two are carrying shields or rattles, one appears to have a beak, and one may have a crude penis.
 The site likely had spiritual significance, and the anthropomorphs may represent shamans, who were frequently depicted with wings in Native American art.
There are currently 30 state radio networks in the National Association of State Radio Networks.
 Each network operates on a similar premise but ownership of each network varies.
 In principle, each individual network provides live satellite fed radio programs to radio stations in their respective state.
 The networks rarely charge each individual radio station for these programs, but rather barters with each affiliate for commercial radio time.
 The network subsequently sells this bartered commercial time to local, regional and national advertisers.

Question: Which group contains the most members: Sugar or State Radio?
Answer: Sugar