In a good paragraph, the topic sentence states the main idea, but the remaining sentences do not have to refer to the topic sentence.
true
false

False

Explanation:

It is true that in a good paragraph, the topic sentence states the main idea. However, it is false that the remaining sentences do not necessarily have to refer to the topic sentence. While the topic sentence states the main idea, all of the other sentences have to be linked to this as well. In fact, the rest of the sentences in a paragraph are there in order to provide more information on the main idea.