a.)mailed a letter to his father
So that the reader understand how they lived.

In the English language, the word "who" is almost always used as a pronoun.
It represents a person, similar to the words "I" and "me".
I think it's Actor's must interpret their characters as the author of the text intended them to
Answer:
I would rather 100% say c "robin is outgoing, while little john is shy"
Explanation: