Answer:
It is H
Its so easy no need to explain. Just look at the pic
An organism that lives in or on another organism and gets its food from or at the expense of its host
Protein synthesis occurs in the cytoplasm, specifically in the ribosomes. Proteins that are meant to be excreted, such as in the pancreas, are produced in the rough endoplasmic reticulum which is a membrane studded with ribosomes. In organs that primarily function to produce and secrete proteins, there will be a larger rough endoplasmic reticulum with more ribosomes.
15. B.
16. G. schlerenchyma cells
17. D. ATP