What does this symbol represent on a geologic map?
fault
strike and dip
fold
elevation

Answer:
Option (2)
Explanation:
Dip is usually defined as an angle of inclination of a plane with respect to the horizontal and is measured along a vertical plane.
Whereas, the strike is the direction along which the inclined plane intersects the horizontal plane.
Both dip and strike are attributes of plane and are mutually perpendicular to each other. These are important because it tells us how a particular rock type is oriented in an outcrop.
In the given image, it signifies that the rock is dipping at an angle of 21° towards the north direction and the strike direction is East-west direction.
Thus, the correct answer is option (2).