Question

1. in synovial joints, lubricating fluid is contained in a bursa sac.

Explanation:

Synovial fluid in synovial joints is found in the joint cavity, not specifically in a bursa sac. Bursa sacs are fluid - filled sacs that reduce friction in other areas (like between tendon and bone), but the main location for synovial joint lubricating fluid is the joint cavity itself.

Answer:

B. False