Question

Spreading information with the purpose of supporting a cause is best described as

Answer 1

This would be Propaganda 

Answer 2

Propaganda

Step-by-step explanation:

By definition, the word propaganda means: "information, especially of a biased or misleading nature, used to promote or publicize a particular political cause or point of view".

So if you're distributing flyers or spreading the word of something that you believe ("supporting a cause"), that's most likely propaganda.