Question

1. carlos saw that the towns river rose several inches overnight. he concluded that rainfall caused the rise. which is a reasonable alternative explanation?

a. the riverbed disappeared
b. the weather station malfunctioned
c. snowmelt upstream increased the flow
d. the river created more water

Explanation:

Carlos concluded rainfall caused the rise. We need to find a reasonable alternative. Snowmelt upstream increasing flow is a common natural cause for a river to rise. A riverbed disappearing would lower water, a weather station malfunctioning is unrelated to the river's actual water - level change, and the river creating more water is not a typical natural process.

Answer:

C. Snowmelt upstream increased the flow