Actions, words, and feelings of the narrator and other characters sere to
develop a character's existence

True.

Explanation:

It is true that the actions, words and feelings of the narrator and other characters can develop the existence of a character, but the actions, words and feelings of that character are also important for his own existence. In this case, in a nutshell, we can affirm that the interaction between the characters and the description of that interaction by the narrator is what defines and develops the existence of all elements of the text, including the existence of the characters.

for me i cant do homework without music, so, i guess i would say faster with it, than without it. for me at least.

1)a

2 b

3 d

4 d or b

explanation: