Fact check for the answer:
I just did this on USA Test Prep, and I can confirm the answer is B!!
<span>The
correct answer is orthoptics.</span>
<span>Orthoptics is a profession of eye care that do things such as
diagnosis and non-surgical management of strabismus (wandering eye), amblyopia
(lazy eye) and eye movement disorders. Orthoptists are trained professionals
who are uniquely skilled in diagnostic techniques.</span>
