Does the word cuales need an accent?

Yes, the word "cuales" needs an accent. It should be written as "cuáles".

Here's why:

* "Cual" is an interrogative adjective meaning "which" or "what".

* When "cual" is used in the plural form ("which ones" or "what ones"), it becomes "cuáles".

* In Spanish, words ending in -es generally don't have an accent. However, "cuáles" is an exception because it is an interrogative pronoun and needs the accent to distinguish it from the plural of "cual" (which would be "cuales" without the accent).

Therefore, "cuáles" is the correct spelling with the accent.