Final answer:
One gait cycle refers to the full sequence of walking motions from a heel strike of one foot to the next heel strike of the same foot.
Step-by-step explanation:
A gait cycle is a term used to describe the sequence of motions that occur from one heel strike of the foot to the next heel strike of the same foot, completing a walking cycle.
Therefore, the correct answer to the question 'One gait cycle is equal to which of the following?' is B) Right heel strike to right heel strike.
This represents one full sequence of walking, covering all phases from the initial contact of one foot to the moment that same foot contacts the ground again.