As baby Sanjay’s physical development improves, he is able to crawl around and explore his environment. This advances his cognitive development, as he learns about the size and shape of objects, as well as how they function. His newfound crawling skills also contribute to changes in Sanjay’s psychosocial development. For example, he may experience anger when he picks up a breakable object, only to have one of his parents take it away. In addition, Sanjay experiences happiness when his parents encourage his motor efforts and frustration when they remove him from an unsafe area, such as the stairs. This example shows that the three areas of development .

A. confuse the infant
B. are independent
C. follow a single course
D. overlap and interact

This example shows that the three areas of development D. overlap and interact.

Explanation:

As we can conclude from the situation described, baby Sanjay is not developing one area at a time. At the same time his motor skills are increasing, and because of that increase, he has experiences that improve his  cognitive and social/emotional development. He experiences anger while having an object taken away from his hands, as was described, which is an overlap of areas - more than one thing taking place and being processed simultaneously.

nasa 3

intimacy, passion and commitment are the components of a interpersonal relationship emphasized in the triangular theory of love by robert sternberg.

the triangular theory of love says love can be comprehend as this componest form the vertices of a triangle.  

intimacy relates to feelings such as of closeness and connection;

passion relates the drives that brings people together, as physical attraction.

commitment relates to the being in a long-term relationship.