I think answer B. (In other words, the sentence: Get your friends' addresses, and you can write to them)
The answer to number 7 is 'unusual'.
It should read, "Some people think it is unusual that she wears only pink."
This conflict of trust can also work into a fear of what we commonly refer to as "stranger danger." Lon Po Po contains these same conflicts of trust, but is unique in its representation of the Chinese culture.