Berk says your mind, hormone system and immune system are constantly communicating with one another in ways that impact everything from your mood to your ability to fend off sickness and disease. take grief: "grief induces stress hormones, which suppress your immune function, which can lead to sickness," he says.

–"you asked: does laughing have
real health benefits? ,"
markham heid
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.

M read the sentence. what best describes the underlined part of the sentence, and why? alma plans to visit london and paris, where her parentswent on their first trip together as a married couple. it is a restrictive relative clause because it begins with arelative pronoun, has both a subject and a verb, and is notnecessary to the meaning of the sentence. it is a nonrestrictive relative clause because it begins witha relative pronoun, has both a subject and a verb, and isnecessary to the meaning of the sentence. it is a restrictive relative clause because it begins with arelative pronoun, has both a subject and a verb, and isnecessary to the meaning of the sentence. it is a nonrestrictive relative clause because it begins witha relative pronoun, has both a subject and a verb, and isnot necessary to the meaning of the sentence.