In foveal vision, a. each ganglion cell excited by many receptors b. each ganglion cell is excited by a single cone c. ganglion cells respond poorly to color vision d. ganglion cells respond well to dim light

In foveal vision, EACH GANGLION CELL IS EXCITED BY A SINGLE CONE.
Foveal vision refers to the vision that occur in the center of the field of vision, where acuity is at its highest. Due to this fact, the foveal vision is the clearest form of vision.