Dear Clunk,
In my opinion you are expecting too much from this simple survey. This survey is in the form of a "flash-card" presentation. These types of surveys can never truely represent real life situations. Sure it could be further developed. I think the authors will find this out when they receive a wide scatter of answers.
Per the engine noise: I would:-
1. select carb heat
2. move mixture to full rich
3. fuel pump on, change tanks
4. mags select each in turn
5. adjust throttle
6. steer towards landing area.
flyme.