Questions & Answers about Marie discute avec la maman.
Discute is the present-tense, third-person singular form of the verb discuter.
The subject here is Marie, so French uses the il/elle/on form:
- je discute = I discuss / I am talking
- tu discutes = you discuss
- il/elle discute = he/she discusses
So:
- Marie discute = Marie is discussing / Marie is talking
Discuter by itself is the infinitive, meaning to discuss or to talk.