In the sentence the verb is describing a person job which means the definition should have words like one, who, or a person who and the only having that is A
Another reason being is that C is describing a process not a person and B is describing the the ability to do the job and not the job itself
He takes the responsibility of being a father because he knows that his brother is still studying and do not have enough money to provide for the problem he made. Explanation:
