Questions: What connective tissue provides a mold that bone replaces until bone growth is complete?

The answer is the first one: cartilage.

Explanation for each option:

• Cartilage: Correct. Cartilage is a type of connective tissue that provides a mold or framework that bone replaces during the process of endochondral ossification, which is how most bones in the body are formed.
• Compact bone: Incorrect. Compact bone is a dense and strong type of bone tissue, but it does not serve as a mold for bone growth.
• Spongy bone: Incorrect. Spongy bone, also known as cancellous bone, is a porous type of bone tissue found at the ends of long bones and in the interior of other bones, but it does not act as a mold for bone growth.
• Yellow bone marrow: Incorrect. Yellow bone marrow is primarily involved in the storage of fats and does not provide a mold for bone growth.
• Red bone marrow: Incorrect. Red bone marrow is involved in the production of blood cells and does not serve as a mold for bone growth.

Summary: The connective tissue that provides a mold that bone replaces until bone growth is complete is cartilage.