What organelles are present in both plant and animal cells?

Explanation:

Structurally, plant and animal cells are very similar because they are both eukaryotic cells. They both contain membrane-bound organelles such as the nucleus, mitochondria, endoplasmic reticulum, golgi apparatus, lysosomes, and peroxisomes. Both also contain similar membranes, cytosol, and cytoskeletal elements.

because they both contain eukrayotic cells.

the cell theory states that all living things including animals, as well as plants, are made of cells.

well, that's easy; the answer's c, "it reduces contamination of the water and substrate of the estuary."