Answer
Situation A has the greatest acceleration. Situations B, C, and D are tied for the least accelerations.
Work Step by Step
The equation to guide the thinking on this question is: Acceleration=Net Force/Mass
The mass is all the same, and the net force is directly related to the acceleration. This means that as net force increases, acceleration increases. Situation A shows a net force of 3N acting upon the breadbox. Sitautions B, C, and D all have a net force of 2N. This means that Situation A has the most acceleration and the other situations are tied for the the least acceleration.
