Answer:
the tone of the passage is serious!
Explanation:
Alice is clearly sharing how she feels about what's going on showing she is serious..
The ad allows the person or person(s) who made it get money, in other words the one who made that ad are paying the person who made the eResource document money to put their ad in it.
The answer to this question is yes.
Answer short period
Explanation:era is long and a short period is not