To prevent allergic reactions.
I believe the answer would be B because at one years old, children don't have much strength to hold their own body weight. they can't do a pull up, they can't run a mile without resting, and they can't do a cartwheel. remember, children develop as they grow and at one years old, they are still developing. maybe at like 7 or 8 they can do something but besides that, the answer is B.
I hope this helps!
Please make brainliest to help me out!!
Thanks!!
