Answer:
C) Watch for oncoming traffic.
Step-by-step explanation:
If you must cross into the oncoming lane as you make a turn, you should "Watch for oncoming traffic".
It's very important for one crossing oncoming lane when making a turn to check out for oncoming traffic. This is necessary in order to avoid head-on collision with oncoming vehicles.
This is a safety measure that is necessary for all road users especially the drivers.