Question

letters c and d indicate distinct terraces along the snake river. which of these terraces indicates the floodplain occupied by the river the furthest in the past? c d both c and d neither c nor d

Explanation:

In river - terrace formation, the higher the terrace, the longer ago it was part of the floodplain. Terrace D is higher than terrace C, indicating it was the floodplain occupied by the river the furthest in the past.

Answer:

D