Answer:
A
Explanation:
Because it is helping us to learn the functions of eye contact.
Because it is informing us how we use eye contact when don't know.
Because it is informing us when to see that something is happening to someone through eye contact.
Because it is informing us that it is also a way of communicating to people
Answer:
However many possible scenarios of anthropogenic extinction have been proposed; such as human global nuclear annihilation, biological warfare or the release of a pandemic-causing agent, overpopulation, ecological collapse, and climate change.
I think it's A
cause it's big and will not fit.