Simple kinematics multiple choice question

[NP04]

Homework Statement

See image.

Relevant Equations

conceptual problem

I selected A, because the ball is merely in motion due to the force of gravity (after applied force).

My teacher has not concerned us with air resistance so can someone please explain why the correct answer is C? I reasoned that gravity was always accelerating the ball at -9.8 m/s^2 throughout its trajectory so condition II could not be accurate.

 

[haruspex]

Problem Statement: See image.
Relevant Equations: conceptual problem

View attachment 242988
I selected A, because the ball is merely in motion due to the force of gravity (after applied force).

My teacher has not concerned us with air resistance so can someone please explain why the correct answer is C? I reasoned that gravity was always accelerating the ball at -9.8 m/s^2 throughout its trajectory so condition II could not be accurate.

II is false and your reasoning is correct (but to clarify, you should explain why air resistance is zero at the highest point, so gravity is the only force).
But what about III?