Question

the author says that \the word mariachi is a bit of a mystery.\ the author means that nobody is sure what the word first meant or
a why some music is popular.
b which musicians are best.
c how it is like other words.
d where the word came from.

Explanation:

The statement "nobody is sure what the word first meant or" implies uncertainty about the origin of the word. The origin of a word refers to where it came from. Options A, B, and C are not related to the meaning - origin of the word "mariachi".

Answer:

D. where the word came from