No, because "avocate" starts with a vowel and to avoid the conflict " ma-a ", "ma" changes to "mon". other example : mon amie
Is there a reason you can't use "avocat"? here? Are the two words pronouced differently?
I think the aim of the exercise is to show you that "avocat" also exists as a feminine word. pronounciation: avocat AVOCA - avocate AVOCATT
Avocate starts with a vowel, so even though it's feminine, it would take "mon" in this instance, or "son" or "ton" in another sentence.