Refer to figure. 
HUMAN EYE - INNER LAYER

The retina is a light-sensitive layer inside the eyeball where the photoreceptors are found. Images are focused on the retina where the photoreceptors convert them into nerve impulses that are then transferred the brain. The retina has two types of photoreceptors:

1. Rods: They are found in the periphery of retina and they enable scotopic (low-light) vision. The rods can only create black and white images and are also responsible for peripheral vision.

2. Cones: The fovea, at the retina's center, contains only cones that enable photopic (bright-light) vision. The cones are responsible for direct vision and require bright light to function. They are used to detect colours.

Rods → Night vision, Peripheral vision (black and white images) 
Cones → Day vision, Central vision (colourful images)

Let's examine the given options:

They are concentrated in the fovea. → INCORRECT. The cones are located in the fovea. The rods are located at the rest of the retina apart from the fovea.

They are responsible for color perception. → INCORRECT. The cones are responsible for color perception. The rods can only create black and white images.

They are used for high-acuity detail during the day. → INCORRECT. The rods provide loose images and are responsible for vision during the night.

They are used for peripheral vision. → CORRECT. The rods are responsible for night vision and peripheral vision.