Ethos, because it shows credibility of her being a teacher for a long time, which would make her a trustworthy source.
Answer:
"I put on my PLAID bathrobe..."
"was covered in DENSE fog."
"As I was trying to PROD the window closed..."
"I thought of the THREAT of..."
"...full of DREAD."
Answer:
I'd say the answer is choice C.
Explanation:
Given the provided information I'm assuming the narrator find Mangan's sister as a goal or an idol of sorts who they see hope wisdom and in this case, light. Light can be used as Mangan's sister's symbolism of great, or ideal.
When the narrator see's the sister he/she/they is reminded of light and goodness.
Hope this helps! ^^