I think it is not directly stated
The result part of the sentence is then written in the "would + infinitive verb" form; this is called the present conditional tense. For example: I would answer if he called. If the weather improved, our crops would flourish.
The answer is C. Serious, he's not frustrated or stubborn, or being mean or nice, he's just being straightforward and serious
C because an effective title also suggests the audience.