A complex sentence can be created by adding an incomplete thought to a complete thought. It can also be created by taking two simple sentences and making one into a big sentence, which would be half a paragraph. I honestly, don't always write correctly so I use Grammerly. My whole class uses it. This sounds as if I'm advertising, but I'm not.
Answer:
How much water do i waste? Well it's quite easy, we leave the sink on when we are brushing out teeth and whenever we was dishes we never turn off the water.
Answer:
Anthropology is the study of man
A pacifeist is someone who believes in peace
I'd say option B, because that is how the story or the main problem was "resolved" (as the phrase suggests) or taken care of.