The correct answer is: A. If you cannot
The sentence should be: If you cannot sympathize with the poor, how will you be able to do social work?
The word “sympathy” is a noun that means “the feeling of pity and sorrow for someone else’s misfortune.” The word “sympathize” is a verb that means “to feel pity or sorrow for someone else’s misfortune.”
In the sentence, “If you cannot sympathy with the poor,” the word “sympathy” is used as a verb. However, “sympathy” is not a verb. It is a noun. Therefore, the sentence is grammatically incorrect.
The correct sentence should be: If you cannot sympathize with the poor, how will you be able to do social work?
In this sentence, the word “sympathize” is used as a verb. This is correct because “sympathize” is a verb. The sentence is now grammatically correct.