Osteoid-producing osteoblasts must rely on this organelle to produce primary structures leading to the formation of collagen and calcium-binding proteins.

a. Peroxisomes

b. Ribosomes

c. Mitochondria

d. Centrioles

The correct answer is option b. "Ribosomes".

Explanation:

Osteoid-producing osteoblast must rely on ribosomes to produce the primary structures leading to the formation of collagen and calcium-binding proteins. Ribosomes are organelles whose main function is to produce proteins, therefore, this organelle is the one that must function in order to osteoid-producing osteoblast could produce the proteins that it needs.