human
Question: Some events on Earth happen instantly while others take thousands of years to occur. Which process takes the longest time to complete?

Choices:
A) rivers rising due to storms and floods
B) evaporation of water from the leaves of a plant
C) weathering of a rock to form small rocks and sand
D) movement of small pieces of rock by flowing water
gpt
The correct answer is 2: weathering of a rock to form small rocks and sand.