C is correct.
Please vote my answer brainliest. thanks!
The outer core. A molten nickle- iron alloy.
Jeremy is sitting quietly when the muscles in his left leg begin to “twitch.” This activation of movement in his voluntary muscles is most likely due to the release of the neurotransmitter Acetylcholine .
The primary function of acetylcholine is to carry signals from motor neurons to the body's skeletal muscles.
Epithelial tissue I think this is correct
Its mitochondrion the answes.
