Question

Which important event occurs in the second trimester of human development? (1 point)
The heartbeat of the developing human strengthens and can be heard of via stethoscope.
The developing human can begin to move its arms and legs
The developing human starts responding to sounds.
The face of the developing human starts to form.

Answer 1

In the second trimester of human development, the important event that occurs is that **the developing human can begin to move its arms and legs**. This is a significant milestone as it marks the beginning of fetal movement, often referred to as "quickening."