Suppose
Here's a link to help you further
http://writingexplained.org/suppose-vs-supposed-difference
Answer:
A child's shoe size is correlated to, but not caused by, the child's age.
Well, in this sentence the subject is 'he', I think you gave us the wrong options here. :S
Answer:
to show that being from New York disrupts the author's relationships with the people he meets
Explanation:
According to the conversation from the excerpt of Travels with Charley, it is narrated that the speaker is treated differently by the people he met on his travels.
First, it is stated that there were interests and questions about "twenty or thirty times" during his trip and also questions from locals who asked him questions.
The purpose of the conversation is to show that being from New York disrupts the author's relationships with the people he meets