Answer:
A/ muscle tissue
Step-by-step explanation:
It is generally believed that the cells that have the most mitochondria in them are the muscle cells. The mitochondria are the energy-producing organelles of the cell, so the tissues of the body that are involved with the most energy productive have the most mitochondria. Muscle cells need the energy required for movement. The heart muscle cells, for example, can be around 40% mitochondria.