input with options: Q: The pain of angina means the heart muscle fibers need more what? A:
OPTIONS:
- water
- carbon
- nitrogen
- oxygen
output: oxygen

input with options: Q: What is defined as superheated gas with a positive electrical charge? A:
OPTIONS:
- supernova
- greenhouse gas
- ion
- plasma
output: plasma

input with options: Q: What is the growing root tip protected by? A:
OPTIONS:
- root flap
- tip cap
- root hinge
- root cap
output: root cap

input with options: Q: Hemolymph bathes organs directly in arthropods and most molluscs, due to an open type of what system? A:
OPTIONS:
- nervous
- pulmonary
- reproductive
- circulatory
output:
circulatory