D. Certain genes are turned on and others are turned off; this action produces adult cells that are specialized
B is the correct answer. They can sometimes show an extinction but not always.
"D is correct answer." The statements are true it's necessary to continued to stretch from during the game. Getting the blood moving through your muscles prepares them for physical activity. Joints can be warmed up through stretching. "Hope this helps!" "Have a great day!" "Thank you for posting your questions!"
This might be wrong but I think it’s B
