What the story or person is mainly talking about.
The closest word in definition to tenacious would be;
“Decisive”
(Decisive means “producing a definite result”)
Answer:
True
Explanation:
True, the commas act like parentheses. So we could say "His doctor could not identify the problem."
As for the periods, capitalization, and layout, it is all correct.
I think that is personification as you are giving a non living thing a living trait, if I'm wrong correct me.
True.
You have to slow down and listen for a coming train.