I'm not sure what the instructions for this exercise are, but I have a couple ideas for the right answer. Hopefully one of these helps you!
1.) Conjugate the verb ESTAR in the present tense
La chica está feliz.
The girl is happy.
2.) Fill in the blank with an appropriate verb.
La chica quiere estar feliz.
The girl wants to be happy.
Let me know if I can be of further assistance!