Weathering is the breakdown of rocks and sediment. Erosion is the movement of rock and sediment. Which of the following is an example of weathering?Crumbling of a rockRolling of a rock downhill.

The example of weathering in the options provided is the "Crumbling of a rock". This is because weathering involves the breakdown or disintegration of rocks and sediment, which is what is happening when a rock crumbles. On the other hand, the "Rolling of a rock downhill" is an example of erosion, which involves the movement or transportation of rocks and sediment from one place to another.

The example of weathering in the options provided is the "Crumbling of a rock". This is because weathering involves the breakdown or disintegration of rocks and the crumbling of a rock is a clear example of this process. On the other hand, the rolling of a rock downhill is an example of erosion, which is the movement of rocks and sediment from one location to another.