A client states, "l am legally blind." Which assessment technique should the nurse use to obtain subjective data to support the client's statement?

A. Observing the pupillary response to a penlight assesses the direct and consensual light reflex, not visual acuity. B. Snellen chart testing is the standard method for assessing visual acuity and can help support the claim of legal blindness. C. Observing the optic disc through an ophthalmoscope evaluates the internal eye structures but does not directly assess visual acuity. D. Observing the cardinal fields of vision tests eye movements but does not evaluate overall visual acuity.