The correct answer is the first option.
The sentence that presents the correct subject-verb agreement is the first one since in it we are talking about "heavy rains" OR "fast-melting snow". In other words, the subject is coordinated by the conjunction "OR" which makes the subject singular. The verb "causes" is conjugated in the third person singular.
Does this count? Lol sorry
the tone that the author use is serious yet funny :)))))
In Harper Lee's novel To Kill a Mockingbird, the criteria of "fine folks" is used by Aunt Alexandria to describe people who live according to strong moral standards. The Levy family are considered to be hard-working, pleasant, and honest members of the community. They are not racist against African-Americans and, in fact, are willing to stand up for African-Americans and their rights. While the Ku-Klux-Klan does parade by Levy's house--in part because he and his family considered to be overly friendly to African Americans--Levy does voice his objections to the Klan member's actions and ideologies and shames them for their beliefs and actions.
