The correct option is B Myoglobin
Muscle is a bundle of fibrous tissue in a body that has the ability to contract, producing movement in or maintaining the position of parts of the body. The total number of muscles in the human body comes in the range of 640-850. Muscle fibers are incorporated with an oxygen-carrying protein called myoglobin. Myoglobin receives oxygen from the red blood cells and transports it to the mitochondria of muscle cells, where the oxygen is used in cellular respiration to produce energy. Hence myoglobin is incorporated into muscle fibers. So, the correct answer is 'Myoglobin'.