Question

a(n) ________ is a sac of fluid associated with a synovial joint. multiple choice bursa articular cavity articular sac synovial vesicle meniscus

Explanation:

A bursa is a small fluid - filled sac that reduces friction between moving parts associated with synovial joints. The articular cavity is the space within the joint, not a sac of fluid in the same sense. There is no common anatomical term "articular sac" in this context. A synovial vesicle is not the correct term for this structure. A meniscus is a fibrocartilage structure in some joints, not a fluid - filled sac.

Answer:

A. bursa