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 starts responding to sounds.
The face of the developing human starts to form.
The developing human can begin to move its arms and legs.

Answer 1

The heartbeat of the developing human strengthens and can be heard with a stethoscope.