Maximum visual acuity in retina is present on
(B) Fovea centralis > Visual acuity, or resolving power, is the property of cones. To resolve detail, the eye's optical system has to project a focused image on the fovea, a region inside the macula having the highest density of cone photoreceptor cells (the only kind of photoreceptors existing on the fovea), thus having the highest resolution and best color vision.
Optic disc
Fovea centralis
Macula lutea
Peripheral part
Special Senses: Vision and its Elements