These are the main organs of your excretory system. Which organ is responsible for filtering liquid waste from your blood?
B) kidneys
Have to use transitional words for your work to flow. In the beginning middle end. you don't want to seem as if it all goes together, you don't need evidence or commentary that doesn't make since. transition words are very needed to help your paper make since and flow all together.
Them becoming either distant or angry if you ask them certain things, the way they talk eg. saying the world would be better with out them around.