Problem:OPTIONS:
- dark
- mirrored
- reflective
- opaque

Q: What is the term for matter that does not let any light pass through? A:
****
A: opaque

Q: What organ is subdivided into ascending, descending, transverse and sigmoid parts? A:
OPTIONS:
- heart
- uterus
- lungs
- colon
colon

Q: What are the three ways to classify matter based on how light interacts with it? A:
OPTIONS:
- opaque, invisible, visible
- transitive, opaque, translucent
- extensive , opaque , translucent
- transparent, opaque, translucent

Answer: transparent, opaque, translucent

Question: Q: In neurons, what often involves gated sodium channels? A:
OPTIONS:
- fermentation
- excitation
- polarization
- depolarization
Answer: depolarization

input with options: Q: Sound navigation and ranging is an acronym for what, which is used to locate underwater objects such as submarines? A:
OPTIONS:
- sound transmission
- GPS
- radar
- sonar
output: sonar

Problem: OPTIONS:
- the earth's core
- water
- moon
- sun
Q: Q: What is the most important source of energy on earth? A:
Answer:
sun