Write the next sentence in this paragraph:

How to measure your gait speed
Evaluate your need for a gait test.
Not everyone will need to measure their gait speed. Generally, this test is reserved for those that are suspected to have difficulty walking or have difficulty balancing.

Possible answers:
[a]. It's also typically performed on persons who have long-term generalized heart problems. Gait testing involves assessing both physical condition, mobility, and speed.
[b]. Determine if you need a gait change. Having a gait change after losing your balance can be disruptive to your gait routine.
[c]. For most people, a gait speed test won't be overly beneficial. This is especially true if you have no health conditions or any difficulty walking.
[d]. Regardless of your race, education and location, you will need a gait test to help you determine how much speed you need to be able to run on foot. With a gait test, you must demonstrate a certain amount of ability to slow down and spring off your foot whenever your gait speed becomes high enough.
[c].