The answer to this is C. or "Have been going"
It's kind of hard to explain this, but basically, if you chose A or B, the sentence would sound wrong, and it's also bad grammar. Try saying it out loud with A or B in it, it might make it easier to see that it's bad grammar :)
Clumps, waves are the two plural nouns.
Answer by Mimiwhatsup: B. she is a lot less concerned with public opinion than Madame Ratignolle.
Why by Mimiwhatsup: "Edna felt that they might have dispensed with the formality. "
A cheese burger is stacked like an essay or writing
Top bun is the intro
The meat and toppings are your body paragraph full with reasons and evidence supporting your topic
The bottom bun is your conclusion
C. The many crimes of caesar, first and foremost that he was ambitious.