If water seeping out of a spring is a source of drinking water, then what is a source of drinking water?

Answer choices:
- ice expanding in rock openings
 - helping to prevent floods
 - industrial runoff
 - it helps plants in growing
 - Water seeping out of a spring
 - salt water
 - polluted water
 - Something with a head, thorax, and abdomen

 

     Water seeping out of a spring     