The oldest features on the moon are?

a) highlands

b) maria

c) craters

d) regolith

The answer to the question given above is letter a. highlands.

>The Lunar Highlands is considered the oldest lunar feature. It is believed to be 4.4 billion years old.

> Lunar features are the physical characteristics present on the moon, such as the craters, maria and highlands. The maria are the dark-colored areas and the flat plains on the surface of the moon whereas the highlands are raised areas.