Answer:
Frameshift mutations
Explanation:
A frameshift mutation is a particular type of mutation that involves either insertion or deletion of extra bases of DNA
C.) she may be infertile but she could use help to impregnate her.
I think D. are made of rigid cartlage
I don't know what you have to choose from, but it has to be somewhere along the lines of your elbow bending to approximately a 90 degree angle and then straightening your arm out again. And you back, hips, waist, and posterior cannot be arched.
A major way to prevent running injuries is to stretch and warm up before running, and cool down after.