What is the most distinguishing characteristic of muscle tissue?

The ability to transform chemical energy into mechanical energy.

Explanation:

Muscle tissue is distinguished from others by its role of transforming chemical energy, which is supplied through the energetic nutrients of food into mechanical energy, which results in muscle contraction (through a contractile mechanism, stimulated by action potentials).

This conversion has as consequence the movement of bones, organs, and heartbeat. Also influenciating in food transport during digestion, gland secretions and excretion of unwanted substances.

i am positive it is c. condensing but i may be wrong