_____ is one of the leading theorists of the information-processing perspective.

A) Lev Vygotsky
B) Jean Piaget
C) Robert Siegler
D) P.A.Silva

Robert Siegler is considered one of the leading theorists of the information-processing perspective, which focuses on how people process, store, and retrieve information. While Lev Vygotsky and Jean Piaget were influential in developmental psychology, they did not specialize in the information-processing perspective. There is no known theorist named P.A. Silva.