Answer:
A Democracy is a system of government by the whole population or all the eligible members of a state, typically through elected representatives.
The answer is interrogative, as interrogative stems from the word interrogate, which is to ask. Judging by the tone of the sentence, I can infer that the missing punctuation at the end is a question mark, which hence leads to an interrogative sentence being the correct answer.
Answer: The right answer is the A) Compound-complex.
Explanation: Just to elaborate a little on the answer, it can be added that this is an example of a compound-complex sentence because it combines both. On the one hand, it is a compound sentence, since it is made up of two independent clauses joined by a coordinating conjunction and a comma: "Employee turnover has decreased significantly this quarter,<em> </em><em>so [...], </em>"you'll have to admit that his results are impressive." On the other hand, it is a complex sentence, since it combines a dependent clause ("even though you may question Sam's training methods") with an independent clause ("you'll have to admit that his results are impressive").
commas go where the sentence changes the subject but is still a sentence
There once lived two kinds of ancient beings: The Akardos, and the Herzlos. The Akardos were demons, and you could say that the Herzlos were somewhat angelic. The Akardos, guile and hostile, were naturally born monsters with absolutely no regard for others. They caused darkness to spread across the world. The only thing they wanted was power and to cause chaos. The Herzlos, on the other hand, tried to keep piece with them and the beings in the Unnatural World. They were the ones who spread light over the worldFor years the two kinds fought. At long last, the two came up with an agreement: The Akardos may rule for a limited amount of time, and the Herzlos would rule another part. The Akardos ruled night; the Herzlos ruled day. And this is why we fear night, and enjoy day. For we do not know lurks in the darkness, yet feel protected in the warm glow of daylight.