PART A: In paragraph 29, what does Martha mean when she says, "Oh, yes, suh. I'm a
puffessor"? which quotation from the text best supports the answer to part B

probably the historical section : )

explanation:

to show how the cables work.

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 !