Why
approach focuses on an organism's observable behavior as opposed to thoughts or feelings.

The answer i think would be diet coke

The question may be incomplete (there are not the possible answers), but according to the scenario, kaley and her coworkers could be in a humanitarian organization like red cross (in the us or in other countries). it's an organization which organizes health and safety services, disaster services, and blood donations.

Waves i don’t know lol