The Do's and Don'ts of Writing to Your Favorite Author
Do believe that your voice matters. ...
Don't get your hopes up that you will receive a reply. ...
Do take advantage of social media. ...
Don't be rude. ...
Do be specific and know what you're talking about. ...
Don't get too personal. ...
Do include your contact info….
Answer:
I think this is
D. The basic economic problem would be solved.
Answer: commonalities; affinities
Explanation:
Communalities is referring to properties having same attributes
Affinities refers to natural likeness.