Answer and explanation

Correct answer: D. Protein synthesis

  1. Step 1: Ribosomes are the site where amino acids are joined.
  2. Step 2: So their function is making proteins.
Answer
Protein synthesis.
Why not the others: Aerobic respiration: this takes place in mitochondria. Photosynthesis: this takes place in chloroplasts. Storage of cell sap: this is the role of the vacuole.

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