1- te
2- nos
3- les
4- nos
5- le
the correct answer is el flamenco
Answer: Yo soy optimista
I am optimistic
Explanation: The subject in this sentence is "Yo", that is a first-person in the singular, so the verb must be conjugated in this form. Yo soy.

B. Hace
Hace tres horas que tengo que estar en el trabajo.