instruction:
In this task, you are given two facts, and a multiple-choice question. Based on the given facts, answer the question with index of the correct option (e.g, "A").
question:
Fact1: All chemical reactions require activation energy to get started., Fact2: Chemical changes are a result of chemical reactions., Question: What is required before a chemical change? (A) kinetic energy (B) energy usage (C) activation push (D) activation energy (E) activation switch (F) activation power (G) Burning fuel and air (H) Evaporation
answer:
D

question:
Fact1: Pregnancy is the carrying of one or more offspring from fertilization until birth., Fact2: An elephant pregnancy lasts about 22 months., Question: How long is the time from fertilization until birth for an elephant? (A) minutes (B) fewer (C) winter (D) 22 months (E) eight (F) Ages 0 to 3 (G) 86400 (H) calibrated
answer:
D

question:
Fact1: stalactites are formed by deposition, Fact2: Inside the caves are some young stalactites and stalagmites in formation., Question: what causes formations in caves (A) Water expanding (B) calcite (C) oxygen (D) erosion (E) nitrogen (F) deposition (G) less water (H) carbon dioxide
answer:
F