We wouldn’t have the resources we need to get through life such as cooking food, clothing for when we get cold, weapons to protect ourselves, and generally things to keep us alive. If we didn’t have fire we wouldn’t be able to stay warm, and healthy. If we didn’t have weapons like steel, iron, wood, we couldn’t make those things in to self defense mechanisms.
Effective, it supports the claim clearly and logically
The most important characteristic of a good detective is if they are observational or not, they won't every solve any case if they don't keep their eyes wide open, and observe.
I believe that the answer would be D. All the lines seem proud to me.