What is the central idea of a text? the topic of a text, or what a text is mostly about the main point the author is trying to make in a text the details that are important for understanding a text the lesson about life that the author hopes to express

In line 7 of sonnet xix by john milton, the speaker ask, "doth god exact day labor, light denied" what does his question mean a what shall one charge god to work in the dark b why must god make us suffer to work c is god trying me ? d how does god expect him to work when he is blind