The only article among these options is an, and that is the correct answer - <em>an </em>is the indefinite article.
It, her, and that are pronouns.
Genius: A genius is showing great intelligence skill in a particular area of activity. For example, a mathematical genius.
Gifted: Having outstanding talent. For example, a gifted dancer.
Prodigy: A young person who is unusually intelligent for their age. For example, a child prodigy on the piano.
Savant: a person with great knowledge in a particular subject for example, a computer savant.
Yes, it i clear because it is giving you visual queues telling you that global warming is fake. Such as the planet with snow, and the snow around the car with the quote on it "warm globally, freeze locally".