Infiltration is the process by which rainwater becomes; A. Saltwater B. River water C. Ground water D. Ocean water

http://ga.water.usgs.gov/edu/watercycleinfiltration.html

3. Infiltration is the process by which rainwater becomes

A. groundwater.

correct answer. I'm 100% sure!

The correct answer is C. Ground water.

Infiltration refers to the process by which rainwater seeps into the ground and becomes part of the underground water system, known as ground water. This process occurs when rainwater falls on the Earth's surface and is absorbed by the soil or permeable rock layers. As the water infiltrates the soil, it fills the empty spaces or pores between the soil particles or within the rock layers. Eventually, this water can accumulate in underground reservoirs, called aquifers, which can be tapped into for drinking water or to supply wells and springs.

To arrive at the answer, you need to understand the terms mentioned in the options and their relation to the process of infiltration. In this case, infiltration involves the movement of rainwater into the ground, not the ocean, rivers, or saltwater. Therefore, the correct choice is C. Ground water.