Answer
Please see the work below.
Work Step by Step
We know that according to given scenario
$Nsin{\theta}=\frac{mv^2}{r}$...........eq(1)
and $Ncos{\theta}=mg$...............eq(2)
Dividing eq(1) by eq(2),we obtain:
$tan{\theta}=\frac{v^2}{rg}$
This can be rearranged as:
$v^2=rgtan{\theta}$
The last equation shows that as the angle increases, tangent values increases and hence the velocity increases as well. Thus, for higher velocity higher bending should occur. So, b is correct.
