Answer:
I'm pretty sure when I get to a certain amount of points it will mark it
The answer to your question is going to be d
I think the answer to this question is that it paved way to the popularity of mystery fiction. Also, a significant result of Doyle's detective mysteries is their focus on crime investigation and paying attention to details that would help in crime-fighting - which encouraged awareness during his time about it.
It Uses It Correctly. However You Could Also Use A Comma In It's Place.
The answer is C. climax.
Hope this helps :3