I believe C is true but i do not know that for a fact :)
Answer: Because of the fruitful harvest, instead of eating a modest Thanksgiving dinner, we filled our plates to the brim; an abundance of food was had that year.
Explanation:
Compound-complex sentences are typically complicated sentences. A compound-complex sentence usually has two or more independent clauses and also have at least one dependent clause.
From the options given, the option that is a compound-complex sentence is "Because of the fruitful harvest, instead of eating a modest Thanksgiving dinner, we filled our plates to the brim; an abundance of food was had that year".
Answer:
C because rather is telling you why it's not a valley (hope I made it make sense)
Answer: "I am sorry that I won't be able to say everything I'd planned in my remaining time, but please let me conclude with . . ." Then state your most important idea and make your conclusion before time runs out.
Explanation: If you may be cut off by the moderator or the chairman, your audience will at least hear the conclusion you planned. If you are stopped ( and it DOES happen ) in mid-sentence or without making your most important point, the audience will see you as disorganized, or insensitive to the time limits, and may have an unfavorable impression of you-- and they will have missed the purpose of your speech.