Answer:
a. How Thoreau protested
Explanation:
In the passage, the author shows how Thoreau protested. The author tells us that Thoreau protested laws that he believed were unfair. This included the Mexican-American War and slavery. Thoreau protested these laws by refusing to pay the poll tax. He was eventually arrested for this practice, and his acts and writings set the basis for civil disobedience all over the world.
The topic sentence is usually the first (or sometimes the second) sentence of a paragraph. It summarizes the paragraph as well as identifies the main point.
I hope this was helpful.
Virus is the simple subject because the subject is whatever is before the verb
and in this case....'is" is the verb
