Joe is noticing that everyone in his class has been coughing a lot lately. Joe's theory is that, "coughing is caused by the change in air pressure, and temperature changes." Which
statement best explains how Joe is using the word theory?
A. To describe an opinion that he has.
B. To describe an observation supported by data.
C.
To describe a well-supported idea accepted by many people.
To describe a fact that has shown to be true in all circumstances.
D.