Which topic sentence best introduces the supporting evidence in this passage?

Laughter is the brain’s way of getting rid of stress caused by a weak immune system.
Grief can be very painful and is often hard for people to overcome, so they laugh often.
The hormone system is very important and functions only if people are happy.
The systems in our bodies communicate with one another, which affects health and healing.

Topic sentence best introduces the supporting evidence in this passage are the systems in our bodies communicate with one another, which affects health and healing. Thus, option (d) is correct.

What is evidence?

The term “evidence” means the right kind of proof to lead to a conclusion. There are different kinds of evidence, such as newspaper articles, images, historical records, videos, footprints, signatures, files, internet sources, documents, medical reports, and voice recordings.

Some forms of evidence are reliable and accurate, yet false evidence makes it clear that the subject will face harsh legal repercussions. For instance, the communication between the systems in our bodies, which affects health and mending, is solid proof.

Therefore, option (d) is correct.

Learn more about on evidence, here:

https://brainly.com/question/6764645

#SPJ5