The factors which promoted the development of new forms of entertainment were (A). The new middle class had leisure time and extra money.
With more leisure time and money to spend, middle class people turned to alternate and upcoming forms of entertainment such as dance halls, carnival rides and professional sports.
C. Subject by Subject the reason being that it is talking about more then one thing.
Mrs. Medlock is the nastiest servant at Misselthwaite Manor
Yes a or b becouase it is the same
It might be clearer to say: According to the dictionary, a squawk is not the same thing as a squeak. there's no need for them to be plural in your sentence and it's likely that, in the dictionary, they're listed as "squeak" and "squawk" singularly. when describing dictionary definitions it's best to use the form of the word that the dictionary uses for clarity.
