Answer:
b) by noticing how the character interacts with other characters
c) by noticing details about what the character says, does, and thinks
d) by noticing how the other characters perceive the character
e) by noticing the context, and use it to make inferences about the character
Explanation:
Indirect characterization is a technique used in writing to convey information about a character without directly revealing those qualities. Instead of describing a character directly, the author shows what that character is like through what that character says, thinks, looks like, and how other characters react to that character.
Grover proves that he is a real friend to Percy. For example, during the battle between Percy and Ares, Grover supports Percy throughout the conflict.
I'm sorry I only have the answer for the first question. I hope this helped you enough though