This figure shows four numbered river terraces,with 1 being the highest and 4 being the lowest.Which is the oldest terrace?
A)1
B)2
C)3

Question

This figure shows four numbered river terraces,with 1 being the highest and 4 being the lowest.Which is the oldest terrace? 
A)1 
B)2 
C)3

Quizplus · Accepted Answer

River terraces are formed by the gradual incision of a river into its surrounding landscape over time. Therefore, the highest terrace (terrace 1) would be the oldest, as it was formed first and subsequently eroded down to form the lower terraces.

This Figure Shows Four Numbered River Terraces,with 1 Being the Highest