A plumber knows that if you shut off the water at the main valve, it is safe to remove the sink faucet. The plumber turns the main valve to the “Off” position. What conclusion can the plumber make?

classic syllogism

If P then Q
P
Therefore, Q

A plumber knows that if you shut off the water at the main valve, it is safe to remove the sink faucet. The plumber turns the main valve to the “Off” position. What conclusion can the plumber make?

It is safe to remove the sink faucet.

The conclusion the plumber can make is that it is now safe to remove the sink faucet.