Ana’s father gives her one toy. The next day, he gives her another toy. The next day, he takes back the first toy, as he realized it is not safe for her as an infant. She now looks at her shelf and sees only one toy. She is sad because she realizes a toy is missing. This relies on which core knowledge system?

Social cognition refers to

the ability to act as a leader. mastery of the basic concepts of classification and causality. the ability to learn about various societies. the ability to understand social interactions.

Olfactory receptor cells

A) contain no receptor molecules. B) survive for only a few weeks and are replaced by new ones. C) have no axons. D) each contain three different receptor molecules. E) each contain 350 different receptor molecules.