question: cube:geometry
choices.label: A B C D
choices.text: specific gravity:physics blood:botany geology:compounds genes:history
explanation: "cube" is a concept in "geometry" "specific gravity" is a concept in "physics" "blood" is not a concept in "botany", "blood" is a concept in medicine, "geology" is not a concept in "compounds", "compounds" is a concept in chemistry, not "geology" "gene" is not a concept in "history", "gene" is a concept in genetics.