Answer: Something about a place and then they have to dig their own grave and get shot
(Babies are also thrown into the air to use as machine gun targets)
Explanation:
Flames
A subject complement is either a adjective, a noun, or a pronoun that follows a linking verb.
By explaining problems and giving solutions! this is the best fit because the other two might make sense at a first glance, but only explaining problems and solutions would be an effective way to teach people how to set up an aquarium by giving them examples of what to do and what not to do whereas the others are just him talking about his aquarium.