The Answer is c I hope this helps.
There are three basic types of relief sculpture: (1) low relief where the sculpture projects only slightly from the background surface; (2) high relief where the sculpture projects at least half or more of its natural circumference from the background, and may in parts be wholly disengaged from the ground, thus approximating sculpture in the round. [Sculptors may also employ middle-relief , a style which falls roughly between the high and low forms]; (3) sunken relief, where the carving is sunk below the level of the surrounding surface and is contained within a sharpely incised contour line that frames it with a powerful line of shadow. The surrounding surface remains untouched, with no projections. Sunken relief carving is found almost exclusively in ancient Egyptian art, although it has also been used in some beautiful small-scale ivory reliefs from India.
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Biggers’ early work was infused with examples of social realism. He traveled to Africa several times after his UNESCO tour, and his work increasingly embodied the social and cultural themes he experienced while on the continent. In the 1960s, Biggers was one of the first black artists of the era to embrace an integration of African and African American influences in his work. By the 1980s and 1990s he began incorporating themes of birth and rebirth as he incorporated more feminine concentrations into his work.
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