I am pretty sure it means stupid.
Hope this helps lol.
For verbs present tense ending in -ar, the conjugations are o, as, a, amos, an
For -er endings, o, es, e, emos, en
For -ir, o, es, e, imos, en
It's A because -emos is the nosotros form so it's talking about we
Entiendo is the correct answer because "entender," the original form of the verb, is a stem changer, e--ie, and the "yo" form in present tense ends with -o.
¿a dónde fuiste de vacaciones el año pasado?