Answer:
a. fovea centralis
Step-by-step explanation:
This place, called fovea centralis, it's the place where the greate amount of light reaches the retina, and it's the central point on a region called macula lutea.
In this place, you can only find cones and it's responsible for the central vision, the vision needed to details, and we use it to do a thing like reading or painting.