The total runners who began the marathon is 1000
<u>Explanation:</u>
Given:
Runners who completed the marathon = 90%
Men = 30%
Number of men completed the marathon = 270
Total runners who began the marathon = ?
Let the total runners be x
According to question:
Runners who completed the marathon = 
= 0.9x
and,

Solving further:

Therefore, total runners who began the marathon is 1000
I think it’s B, since while an actor has a role, a doctor works in medicine, like a teacher would work in a school.
It's Mr.Tate
Refrence: https://www.shmoop.com/to-kill-a-mockingbird/chapter-17-summary.html