You may turn left on a light that is green even if traffic is approaching from the opposite direction

yes, but you must first make sure that you'll be able to make your turn or you can crash into other vehicles.

adbusters is an oppressive not-for-profit organization, founded in 1989  determined to end capitalism. the goal is to  spread their message through a self published magazine (which contains no advertisements). the likely reason why adbusters publishes a magazine with spoof advertisements is that  adbusters wants to encourage consumers to think critically about ads. 

answer(a) occurs after your prediction;