Q1. The answer is mirror neurond.
Mirror
neuron is a neuron that fires not only when an animal performs an
action, but also when someone else perform the same action. It was
discovered in experiments with macaque monkeys using an MRI (magnetic
resonance imaging). In the experiment, if a monkey rips a piece of
paper, mirror neuron is activated, as well as it is activated
when the monkey sees or hears that someone else rip the piece of
paper.
Q2. On the photo, arrow shows D. The dendrites carry the electrical impulses from the signal receivers to the cell body.
The neuron consists of body, dendrites, and axon. Usually there is one axon and many dendrites per cell. Axon carries impulse from the cell body, while dendrites carry impulses to the cell body.
