question: garbage:resources
choices.label: A B C D
choices.text: cost:revenue challenge:opportunity communication:emotions diseases:vaccines
explanation: "resources" can be obtained from the rational utilization and transformation of "garbage". accounting concepts include "costs" and "revenues". the "opportunity" is obtained by the rational use and transformation of the "challenge". "emotion" can be released through "communication", but "communication" cannot be transformed into "emotion" "disease" can be prevented by a "vaccine".
relation: cost revenue R2.4
relation: challenge opportunity R3.10
relation: diseases vaccines R3.3