Question

1. ______ is responsible for producing blood cells. compact bone spongy bone bone marrow synovial fluid

Explanation:

Bone marrow, specifically red bone marrow, contains hematopoietic stem cells. These cells have the ability to differentiate into various types of blood cells, such as red blood cells (which carry oxygen), white blood cells (which are important for the immune system), and platelets (which help in blood clotting). Compact bone is dense and provides strength and structure to bones. Spongy bone is less dense and is found at the ends of long bones and in the interior of other bones. Synovial fluid is a viscous fluid that lubricates joints.

Answer:

Bone Marrow