Race means that from where you are from like from India, China, Mongolia, Mexico, Africa etc. So the question basically means Where are you from?
Socialism means to be social with other people but with in same community....
Communism means to be social with people but with other community.....
I'm not sure what the lesson is, but the answer that makes sense the most is number. Number because most lessons in subject-verb agreement concerns the singularity and plurality of the subject at hand
when you get 2 or more answers there should be a button over each one, clicking the button marks it as brainlist answer