Which of these is a good example of "anticipatory driving"?

You answered correctly. Anticipatory driving means you do not just react to what happens, but you actively try to predict possible developments in traffic. This includes responding quickly to likely changes and trying to recognize what other road users intend to do. Both answer 1 ("I respond as soon as possible to probable changes in the road traffic situation") and answer 2 ("I attempt to identify the intentions of other road users, as soon as possible") describe this proactive and careful behavior.

Limiting your observation to only the car directly in front is not anticipatory; you must watch the whole traffic environment to anticipate dangers. Remember, good anticipatory driving helps prevent accidents by allowing you to react early and safely.