Which two phrases describes a situation that will cause an object to move a constant speed to slow down

Answer is in the photo. I couldn't attach it here, but uploaded it to a file hosting. link below! Good Luck!

cutt.ly/XzW3SUN

The phrases the describe the situation are A and C

Explanation:

1- If a car is at rest or uniform motion, it will remain in that condition until an external force acts on it. If the external forces acting on a body are balanced , it means that their sum is equals to 0, which eventually results that no Net force is acting on it.

For balance forces, ∑F = 0

2- If the car moving at a constant speed is slowing down, it means that the forces have become unbalanced, eventually resulting in a Net force in the opposite direction of the motion of the car, due to which it is slowing down

For unbalanced forces, ∑F ≠ 0

The question satisfies 2, which is the answer

i am not sure if this is the correct story but i think the answerr is when twain's confidence when he asked twin a question

explanation: