In segments B and E of a velocity versus time graph, the two values that would likely be equal for the object are:
mass
This is because the mass of an object remains constant regardless of its motion, while velocity and acceleration can change depending on the object's motion during those time intervals (segment B has a negative acceleration and segment E, being parallel to the time axis, indicates zero acceleration). The net force would also differ in these segments. Thus, the correct response is:
mass