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: safety goggles are used for protecting the eyes during experiments, Fact2: Larger pupil and larger corneas permit more light to enter the eye., Question: What are used for protecting the pupils during experiments? (A) specialized (B) safety gloves (C) safety goggles (D) safe operation (E) lamphreys (F) Chemicals (G) chemical messengers (H) safety suit
answer:
C


question:
Fact1: soil is formed by rocks eroding, Fact2: Rivers erode the rocks they flow over., Question: What is formed by rivers? (A) fish (B) soil (C) rain (D) bamboo (E) spring (F) clouds (G) kayaks (H) NaCl
answer:
B


question:
Fact1: bacteria in soil convert atmospheric nitrogen into a form usable by plants, Fact2: Rhizobial bacteria convert atmospheric nitrogen into nitrate fertilizers in a form usable by plants., Question: What does rhizobial bacteria do for plants? (A) Converts oxygen (B) nutrients (C) Converts h2o (D) Converts nitrogen (E) Regrows it (F) hydrate their cells (G) Converts methane (H) competing for resources
answer:

D