Answer:
Michèle is not (large / big/ fat)!
Explanation:
All of the above, but maybe just maybe the third one
1. Michèle n'est pas (gros / grosse / grosses)
Answer is grosse
because
grosse = Féminin, singulier - Michèle - prénom féminin
gros = Masculin, singulier
grosses = Féminin, pluriel