Final answer:
The correct answer is c) These activities occur only when children are reinforced by adults.
Step-by-step explanation:
The correct answer to the question is c) These activities occur only when children are reinforced by adults.
In the context of Piaget's theory of cognitive development, the getting into everything activities of 1-year-olds are referred to as little scientist behaviors. These behaviors can be seen as a form of tertiary circular reaction, where infants repeat actions to explore and learn about their environment. It is considered normal for 1-year-olds to engage in these behaviors as they develop their cognitive abilities.
However, these activities do not solely occur when children are reinforced by adults. They are driven by the child's curiosity and desire to understand the world around them. In fact, young children often engage in exploratory behaviors even when adults are not present or providing reinforcement.