input with options: Q: What process determines which of two fossils is older or younger than the other? A:
OPTIONS:
- differential dating
- difference dating
- curve dating
- relative dating
output: relative dating

input with options: Q: What two gases are the main components of air? A:
OPTIONS:
- oxygen and helium
- carbon and oxygen
- hydrogen and helium
- nitrogen and oxygen
output: nitrogen and oxygen

input with options: Q: In the past, biologists grouped living organisms into five kingdoms: animals, plants, fungi, protists, and what? A:
OPTIONS:
- trees
- pathogens
- lizards
- bacteria
output: bacteria

input with options: Q: What is a three dimensional snycline? A:
OPTIONS:
- a crust
- a gorge
- a peak
- a basin
output:
a basin