If you are looking for a sentence in that paragraph to support the main idea, I think it would be "All it requires is a good pair of sneakers-no cables, stylish outfits, or weights required. The main idea is basically that walking is a good and easy way to begin exercising, and that explains it.
B. They left food for Atticus at the Finch's house
<span>The only place for the topic sentence is in the beginning as its purpose is to attract readers so that they would like to read a work till the end. So, to answer your question, the topic sentence should never be in the last lines, where the conclusion <span>of the whole work is written.</span></span>
