A is the correct answer, hope this helps.
Mitochondria are needed for energy production, soif you think about it, it makes sense that the muscle cell would have more a muscle cell works far harder than a skin cell hope i helped!!
Tell an adult and go to the hospital if it is toxic or can hurt you, another option if it is available is use the shower.
Photoreceptors.
I hope this helps!
That is when the head is preparing to crown (crowning).