Which macromolecule provides instructions for growth?

Nucleic acids.

Explanation:

There are four types of macromolecules present in our body. They are carbohydrates, proteins, lipids, and nucleic acids. All four biomolecules have different functions. Nucleic acids are DNA and RNA present in the chromosomes of the cell. They carry genetic information from generation to generation. It also plays an important role in cell division and cell growth. The cell division results in the growth of an organism.

it's c. (to reduce the greenhouse effect/carbon gasses)