The correct answer is "No nos mole-stes" (Ignore the hyphen, it's there because Brainly bans the word as it has a different meaning in English, and it's not a nice one).
Explanation:
The correct answer is "No nos mole-stes". This means: don't bother us. If you say "No nos mole-stas", you're saying "you don't bother us". Meaning: it's ok, you're not disturbing us. Instead, the original meaning of the sentence is imperative. It's more like an order. That's why the tense used should be the subjunctive. "Mole-stas" is in the simple present, which is called in Spanish: presente del indicativo.
