Well, let's go through the Alphabet and mention the letters that contain some closed space:
A, B, D, O, P, Q, R,
That's a total of 7 letters- so the correct answer is "seven"
In an alphabet of lower case letters there are many more, for example "e", "g"
The first, third, and fourth.
The word "dream" emphasises the longing which the persona holds that is not quite tangible - the repetition implies this "dream" is reoccurring, showing that the persona's longing is all the more strong.
He became more flirtatious and sociable towards others. He went from a shy boy to a strong confident male.
C. Please hand me the big,blue notebook