C.the intended use of a product
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While the main idea is usually in the first sentence, the next most common placement is in the last sentence of a paragraph. The author gives supporting information first and then makes the point in the last sentence. Here's a paragraph we can use as an example. Try to locate the topic and the main idea.
Technology is a modern day gift, but it can also be a curse. Depending on how users utilize tech to their advantage, their actions can either push society forward or create a negative impact. For example, tech has provided cars, factory machinery, more efficient communication, a stunning method of planetary exploration, and a multitude of other things. However, people with malicious intent can use tech as means of cyber bullying, fraud, hacking and stealing people's information, pedophilia, and an unhealthy amount of exposure to the world for younger children. Tech has many benefits, but also many setbacks, it just depends on how people use it.
