The main idea is usually stated in the topic sentence.
a. true
b. false

The correct answer is A. True

Explanation:

In texts, the main idea is the key point or message or the idea that is explained by all the details the author includes. In a paragraph, this idea is expressed by the topic sentence which is usually the first sentence and encloses the ideas of the paragraph explicitly stating what the paragraph is about (main idea). Similarly, in texts with multiple paragraphs, the topic sentence in each paragraph supports and expresses the main idea of the text. Therefore, it is true the main idea is usually stated in the topic sentence because this type of sentence tells the reader what a paragraph or text is about.

b is the answer.   i sat on the lumpy sofa, totally exhausted, with a bad taste in my mouth, wondering what i should do next.