I've never seen anything like that before
The parachute was invented 4,000 yrs ago! :)
Answer: it's because they need to provide a lot of energy.
Explanation: fat cells have many mitochondria because they store a lot of energy. Muscle cells have many mitochondria, which allows them to respond quickly to the need for doing work.
The answer is
(c) They transfer energy without matter as a medium.
Have a nice day and please mark me as brainliest!!<3