Question

1. what do all question words have in spanish?○ question marks are optional in spanish.○ each question word has an accent mark.○ some question words have an accent mark.○ no question words have an accent mark.

Explanation:

In Spanish, some question words (e.g., qué, cómo) have accent marks to distinguish their interrogative use from homophones, while others (e.g., quién can also be without accent in some contexts, but common interrogative words like cuándo have accents, while qué always does in questions, but words like qué vs que show the accent is for interrogative function. Overall, only a subset of question words use accent marks for their interrogative form.

Answer:

Some question words have an accent mark.