Question

How do rivers become larger as they travel across land?

Answer 1

The answer is quite obvious, the groundwater will rise, to feed the river, therefore it gets larger throughout the way

So the answer is A

Answer 2

Groundwater rises, adding water to rivers.

Step-by-step explanation:

Tributaries combine, adding water to rivers.

Ice sheets melt slowly, adding water to rivers.

Rainfall in an area increases, adding water to rivers.