Final answer:
Connective tissue wrappings in muscles serve the functions of increasing coordination of activity, adding strength to the muscle, and providing a route for the entry and exit of blood vessels and nerves.
Step-by-step explanation:
The function of connective tissue (CT) wrappings in muscles is to increase coordination of activity, add strength to the muscle, and provide a route for the entry and exit of blood vessels and nerves to muscle fibers. The three layers of connective tissue in skeletal muscles, namely the epimysium, perimysium, and endomysium, support and protect the muscle fibers, allow them to withstand contraction forces, and provide pathways for nerves and blood vessels to reach the muscles. Thus, the correct answer is option 4) All of the above.