Answer:
Option (B).
Explanation:
The muscles are one of the most important tissue of the body. The muscles helps in the contraction and movement of the organisms. Three different types of muscles are cardiac muscles, smooth muscles and skeletal muscles.
The contraction of the muscles occur in the sequential steps. Actin and myosin protein plays an important role in the muscle contraction. The attachment of the actin heads with the myosin is important for the muscle contraction and for the movement of tropomysoin.
Thus, the correct answer is option (B).