Answer
(a) Greater than
(b) III
Work Step by Step
Let the positive direction of the $y$ axis be upward.
If you are moving downward and decelerating, the aceleration points upward. That is $a_y\gt0$.
Let $W$ be the weight of the skydiver. It points downward.
Let $F$ be the force exerted by the parachute on the skydiver.
$ΣF_y=F-W$ and $ΣF_y=ma_y$. So:
$F-W=ma_y$, but $a_y\gt0$ -> $ma_y\gt0$. So:
$F-W\gt0$
$F\gt W$
