Final answer:
The object is decelerating until it stops, and then accelerates in the opposite direction due to constant negative acceleration.
Step-by-step explanation:
If an object's velocity eventually passes through zero, reverses direction, and continues to accelerate in the opposite direction, it indicates that the object is experiencing deceleration until it comes to a stop (i.e., its speed becomes zero). After stopping, it then accelerates in the opposite direction.
This situation typically relates to an object subjected to constant negative acceleration, where the velocity decreases over time, reaches zero, and then velocity increases in the reverse direction as acceleration continues to act on the object.
The object's velocity will eventually pass through zero, reverse direction, and continue to accelerate in the opposite direction. This means that the object is experiencing a change in velocity, which is the definition of acceleration. So, the correct answer is d) Acceleration in the same direction.