Read the following passage:

As a Nigerian, Olubiyi is __1__ with regards to language use. His father had many wives and the polygamous nature of his family exposed him to diverse cultures. His friends accuse him of being ___2__ because he can hardly keep secret. His wife however believes he is not as unserious as everyone thinks but that he could actually be _3__ when assessing situations.

Which of the following is the best option for number 3?