Question

We cannot see things in the absence of:
A) Air
B) Water
C) Light
D) Earth

Answer 1

When light falls on an object, the object reflects the light and when this light reaches our eyes, we are able to see the object. The light which falls on the object reflects in all directions. While all the other options do not affect the ability to see things.

Complete answer:
Light is produced by luminous objects; we cannot see light but we can definitely see the objects that fall in their path. In absence of air, we definitely cannot live but can see another object. Our environment is not covered up with water then even we can see objects, therefore the next option is also incorrect. Earth plays no role to play with the visibility of objects to us. We can see in space even.
Hence, we cannot see things in the absence of light.

The correct option is (C), Light.

Additional information:
Some sources that emit light are the sun, light bulb, candle flame, etc. When an object emits its own light it is known as a luminous object while the objects who reflect the light of other objects to become visible are called non-luminous objects. One of the most popular and natural non-luminous objects is the moon, which is visible to our eyes when the light rays are reflected from it which it receives from the sun.

Note: Light is necessary to see other objects. We can definitely see things in the absence of other options. If we enter a dark room, we cannot see the objects inside the room, therefore we need light to see things.