Final answer:
The canoe is accelerating because acceleration includes changes in velocity, which encompasses both speed and direction, and the canoe is changing its direction while turning. Therefore correct option is B
Step-by-step explanation:
When a canoe is turning to the left to avoid getting stuck in shallow water, it is not maintaining a straight path and therefore its direction is changing. According to physics, acceleration is defined as a change in velocity, which includes changes in either speed or direction. Because the canoe's direction is changing as it turns, we can say that the canoe is accelerating, even if its speed remains constant throughout the turn.