The oxford english dictionary is most in researching which descriptive, figurative, symbolistic, etymological development of a word.

The Oxford English Dictionary is best for finding the "Descriptive" meaning. This is the literal meaning, known also as denotative. It can also help you with figurative meanings, but it is not its primary purpose.

The answer is c, because it's referring to you, and then refers to a group of people stopping the flu, which is a clever way of making the viewer feel like they have the impact to stop a disease. (sorry its hard to explain)