Although Mr. Gibbs was obviously busy reading an absorbing novel, his 5-year-old daughter kept interrupting him with comments and questions about the TV cartoons she was watching. Before Mr. Gibbs becomes irritated with his daughter for being inconsiderate, he should be alerted to Piaget's concept of __________.
a. egocentrism.
b. accommodation.
c. object permanence.
d. habituation.
e. conservation.