5. Which of the following statements about writing introductions and conclusions is true? O A. If you have trouble beginning with the introduction, write the body paragraphs first.
O B. Always write the introduction first and the conclusion last.
O C. If you're writing a research paper, you don't need an introduction or a conclusion
O D. Always write the body paragraphs and the conclusion before going back to write the introduction

quite an interesting way to teach topic sentences, because the answer to this question is the best definition of a topic sentence that one can present, it is as if answering the questions taught you how to do it, this is some real teaching, it is terribly well-done.

the topic sentence in this paragraph is:

topic sentences writers stay on track and keep a paragraph from becoming an aimless collection of sentences about an idea.

which incidentally tells you what a topic sentence should be.

a main idea dna proper infromation

b. our party quickly made its way into the cave / but we failed to find our host [the cyclops] himself inside.