Which dimension of grandparenting includes cultural needs and expectations of what grandparents are to do, such as passing on the family history to the grandchildren?

The correct answer is social dimension

Explanation:

This dimension involves common needs and hopes of what grandparents are to do, like telling their grandchildren the family history for them to keep on passing it on. Another example of this kind of dimension is when they teach to their grandchildren their religion, social and vocational values, how to behave in society, manners.  

d is the correct answer.

b is incorrect because it makes food by itself

c is incorrect because us humans don't know how to produce their own food using the sun like plants.

a is incorrect because consumers can depend on carnivores for eating food for consumers to eat the dead organism. same thing with omnivores.

"choosing is refusing" means individuals face an opportunity cost with each decision they make. economists state that every decision involves trade-offs. opportunity cost is the least desirable alternative given up as a result of a decision.