Which of the following is an example of an earth process being used to measure geologic time?
a.)
as a mountain range forms over the course of one year, a geologist records the date that each mountain peak rises along the mountain range.
b.)
earth processes cannot be used to measure geologic time—measuring geologic time is only a random guess.
c.)the average rate at which a mountain range rises each year is used to estimate how long ago the range began to rise.
d.)a geologist uses a stopwatch to time the formation of a mountain as it rises thousands of meters from the sea.

C.)The average rate at which a mountain range rises each year is used to estimate how long ago the range began to rise.

Explanation:

A geological time can be define as the time scale used to frame certain events which could have occurred in the history of earth. It is used by the paleontologists, geologists and archaeologists to show the time interval of the existence of a particular rock, landform and the fossil. On the basis of this explanation, The average rate at which a mountain range rises each year is used to estimate how long ago the range began to rise. is the correct option. As mountain is a kind of landform. The time of it's formation and destruction can be recorded in geological time.