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.

The last option is correct. The passage uses a specific example, but the main idea of the passage is that the systems in our body are connected, so laughter (because it’s a sign of happiness) can relieve stress and boost our immune system.

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OlanmaE OlanmaE · Answer 2 · 2021-10-29T13:59:27+02:00

A topic sentence is an introductory statement that contains a claim that is made in the passage and will be supported with evidence. The topic sentence that best introduces the supporting evidence in the passage is;

D. The systems in our bodies communicate with one another, which affects health and healing.

In this introduction, the interactive nature of our body's system is stressed.

To support the fact that the systems in our bodies are always interacting, the nervous and hormonal system responses during times of grief are used to support the sentence.

Thus, we see how a piece of evidence is used to support the main claim.

Therefore, the last option is a good topic sentence.

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