<h2>Hello!</h2>
The answer is: C. 16 m.
<h2>Why?</h2>The figure is a right triangle, it means that we can solve it by using the Pythagorean theorem which states that, the largest side of a rectangle (hypotenuse) is equal to the sum of the other two side squares:
Where:
c=34m
a=30m
b=?
So, by substituting we have:
Have a nice day!