Answer:
The Consumer Price Index (CPI) is a measure of the average change overtime in the prices paid by urban consumers for a market basket of consumer goods and services
I think it's B but I am still looking for the answer
Answer: this is advice because I’m assuming that your school president:p
first you can ask your School principal. And if you get the permission to throw a campaign then get a bunch of friends together to plan it out. When you have a whole plan down go check in with the school principal and make sure that your plan is perfectly fine and nothing is wrong with it and is allowed to be able to be inside the school. Or if you want you could possibly Or if you want you want you can have the campaign at another school. This is just friendly advice you don’t have to take it!
Explanation: