The answer would be “many animals die prematurely in zoos because they are exposed to infectious diseases.” The claim is stating that something bad is happening in zoos and this one is the only bad side effect in the choices.
David walker address his pamphlet to the world because, he was drawing a huge audience and he was uniting them for racial equality around the world. If he would have address his pamphlet to the united states,only, he wouldn't have drew a big audience.
B.
There have been times in history when violence was necessary to resolve mankind’s problems, but the Civil Rights Movement is not one of those moments.
Is it trump/obama/biden??!
My sweet,quiet father surprised us with his outburst yesterday
Your only describing the father with 2 words. A comma is only necessary if you were using 3 words