Pick C cuz why not give it a chance and see if you get it right
The word fear can be a verb and a noun.
A topic sentence presents the main gist of the whole paragraph or article. So, if you want to talk about building a snowman, your topic sentence could be about why building snowmans are of relevance. Then, your supporting details could now include steps or advices on how to build it.
A good topic sentence I could think of is:
<em>During the yuletide season, building a snowman is a good activity to do with family and friends because it promotes team-building and fun interaction.</em>
The first main phase of the 'Great Unrest' began with the rapid escalation of discontent in the South Wales oalfields. In this area wages were fixed not by individual or collective bargaining but by the price of coal. ... Discontent also simmered around the issue of 'small coal'.