Question

¿cuál no es una preposición?
preposiciones, conjunciones y adverbios
5 of 20
options: a, si, de, entre, en, durante

Explanation:

The question asks to identify the word that is NOT a preposition in Spanish. "a", "de", "en", "entre", "durante" are all prepositions, while "si" is a conjunction (used to introduce conditional clauses) or an adverb (meaning "yes").

Answer:

si