Answer:
its going to be D. the unwanted sound caused by human activity that disrupts human and animal life
Explanation:
-Medium- an agency or means of doing something.
-Technique-a skillful or efficient way of doing or achieving something.
-Proportion- a part, share, or number considered in comparative relation to a whole.
There are many primitive reflexes for infants, but some of them are the walking/stepping reflex (they will attempt to walk by abruptly placing one foot out), rooting reflex (looking for a base or the nearest object to latch onto because infants are always looking for the breasts to breastfeed from their mothers), and swimming reflex (if placed over water, the infant will paddle their arms and legs).
