Which of these is a question used to develop a thesis statement? What details should I use to support my main idea? What examples will be most interesting for my reader? Why is this important to me or my reader? What arguments might be posed against my main idea?

the answer is subjective. i personally agree with the first answer for this question.

if one isn't strictly talking about objects then the correct answer would be 'my eyes' since according to this riddle i am asleep and in order to answer/open the door i need to open my eyes first of all.

however, if one is specifically looking for an object, then the first thing i would open would be the door

hope this !

you need to make an explanation. so, since you did not include one, so no one, and i mean no one can unfortunately you,