Let's think about one listening strategy that would help everyone become a more effective listener:
-do not interrupt the speaker or correct their grammatical mistakes
It is true that this rule will make everyone a more effective listener! So the entire statement is true as well.
B. The Ohio River Valley was near the coast and offered trade opportunities.
it is known as GDP per capita
I believe that you’d be able to sit upon pillows
I believe it's C. But don't take my word for it, it's just what I think it is but it would be wrong.