Which Language is a Synonym for Castellano?

Marco studies \"castellano\" in one of his classes. Which of the following words is a synonym for \"castellano\"?

A) el inglés

B) el valenciano

C) el español

D) la gramática

Answer:

The word 'castellano' is a synonym for Spanish.

Castellano is a synonym for Spanish. It is commonly used to refer to the Spanish language. So, the correct answer is C) el español.