The repetition of the phrase "do i dare?" three times indicates that: he is indecisive.
One of the central themes that were explored in "The Love Song of J. Alfred Prufrock" is the social anxiety that he experiences.
He is worried about people's conception of him and that is why before he descends the stairs, he wonders if he can dare face the people because of the bald spot in the middle of his head and several other insecurities.
So, option A is correct.
Learn more about The Love Song of J. Alfred Prufrock here:
ive had teachers that made me read a book. and I ended up not reading books anymore. but recently I had a teacher let me pick a book i liked and then i had to explain it. I found a new love for reading.