Chemicals that influence the way that neurons communicate with each other are called..

Nerve cells

Explanation:

Called neurons, they send messages to each other by releasing chemicals called neurotransmitters. Drugs affect this signaling process. “Bath salts” raise the level of one type of neurotransmitter, called dopamine, in brain circuits that control reward and movement.

the correct answer is 4 (giveaways to the public)

something that is given away or gave out for free. an occasion at which things are given away to free. something that is evident or obvious; something that uncovers a mystery.

it could be be in a form of a lucky draw as well. these the company events gather more audience for their pr and it also increases their ratings as well. this is a way to attract more customers towards themselves.

answer; make a decision about which healthcare product to purchase///or review the decision about the healthcare product; good luck