Answer:
It's the third one.
Step-by-step explanation:
It's the third one because 1. it's not plural and 2. because since it's 'maestra' with an A then it makes that character a feminine. So, you can also use process of elimination. Like i said it is not plural so you take out the plural ones that have a S at the end. You are left with simpático and simpática. Since she is a girl/woman, then it needs to end with an A. To be final you take out simpático and you are left with simpática. I hope this helped, I'm not so good at explaining sorry!!