Question

HELP ME PLZ What does a "backflow preventer device" do?

a
Keeps your irrigation system clear of sand and insects?
b
Prevents super high water pressure?
c
Keeps drip nozzles from being blown off the tubing?
d
Stops water from flowing back into the house water and contaminating it?

Answer 1

d.

Step-by-step explanation:

Answer 2

its D

Step-by-step explanation:

A backflow preventer is a device that's installed on your home's water pipes that allows water to flow in one direction