what is the difference between unconfined aquifers and confined aquifers?

a) unconfined aquifers limit water flow in and out, but water flows freely in and out of confined aquifers.

b) confined aquifers limit water flow in and out, but water flows freely in and out of unconfined aquifers.

c) confined aquifers are saturated with water, but unconfined aquifers are not.

d) unconfined aquifers are saturated with water, but confined aquifers are not.

Unconfined aquifers are those into which water seeps from the ground surface directly above the aquifer. Confined aquifers are those in which an impermeable dirt/rock layer exists that prevents water from seeping into the aquifer from the ground surface located directly above.

Explanation:Unconfined aquifers are those into which water seeps from the ground surface directly above the aquifer. Confined aquifers are those in which an impermeable dirt/rock layer exists that prevents water from seeping into the aquifer from the ground surface located directly above.