1) When you have a toothache, you feel pain because: a. there is a cavity in your tooth
b. tiny bits of food are left between your teeth
c. bacteria digest the food left between your teeth and produce an acid
d. the cavity reaches the nerves and the nerves send a message to the
brain

help:(​

What words or phrases you to recognize the historical context of the line 7

Okay can someone tell me the answer to this problem bc i have to buy it now and i don’t wanna do that

Aman lives on the twelfth floor of an apartment building. every morning he takes the elevator down to the lobby and leaves the building. in the evening, he gets into the elevator, and, if there is someone else in the elevator -- or if it was raining that day -- he goes back to his floor directly. otherwise, he goes to the tenth floor and walks up two flights of stairs to his apartment.