Question

which cellular part contains the instructions that cells need to make proteins?
a dna
b cytoplasm
c cell membrane
d ribosomes

Explanation:

DNA contains genetic instructions for protein - making. Other options have different functions. Cytoplasm is the site of many cellular processes, the cell membrane controls what enters and leaves the cell, and ribosomes are the sites of protein synthesis but do not contain the instructions.

Answer:

A. DNA