I'm pretty sure its A because Chamber Music is meant for Two - Twelve players playing one part each.
Answer, Then read the passage? Don't be lazy and actually read the story your teacher provided you.
Explanation:
Answer:
N95 mask, a medical mask meeting the N95 NIOSH air filtration rating
I would recommend reading the Wikipedia page on wind chimes, since you have so many questions about them. Here's a link: https://en.m.wikipedia.org/wiki/Wind_chime