"Video games can kill!" is the main topic or the topic sentence of the paragraph. How did I find this? (you might not probably ask but I will do it anyways) Well first of all, it is the beginning sentence of the paragraph making it obvious. And the other sentences besides this one are facts or reasons or proof or evidence or whatever you want to call it.
Hope this helps! :)
Answer: this is a complex sentence
Explanation:
this is a complex because it is dependent sentence joined with a independent sentence.
if you still don't get it William Humphreys,who was an American meteorologist is complete because it answers who William Humphreys is. the next sentence is dependent because figured out the probable answer 100 years later does not answer who fiqured out the probable answer 100 years later. hope this helps. correct me if i am wrong.
Answer: While I do like to do english classes I don't like writing paragraphs
Explanation: