Um what are the following?
A prepositional phrase describes the noun in this sentence the prepositional phrase is "of support" it is describing "letter" so the object of the preposition is "letter"
Answer:
1. I will turn off all the lights...
2. The graduation class invited Rita and I to attend their ceremony.
3. The amount of people at the meeting exceeded one hundred.
4. The book I borrowed from the library has many pages falling apart.
5. Marcus is one of those boys who studies early in the morning and sleeps well at night.
I think the sentence that best supports this is "I will advise you and direct you. I should not be a man if this womanly helplessness did not just give you a double attractiveness in my eyes."