Answer:
Answer D: B, C, A
Explanation:
A Newton is measured in kg*m/s^2 and it can be interpreted as "this is how much an object weighing 1kg will accelerate when this much force is applied.
So to get the acceleration, we need to divide the force by the weight.
Object A:
a = 1N / 2kg = 1kg*m/s^2 / 2kg = 0.5m/s^2
Object B:
a = 10N / 8kg = 10kg*m/s^2 / 8kg = 1.25m/s^2
Object C:
a = 7N / 7kg = 7kg*m/s^2 / 7kg = 1m/s^2
So the decreasing order of acceleration is B, C, A
