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").

Fact1: a light bulb is used for seeing in the dark, Fact2: Light is emitted by a light bulb., Question: What is required for seeing? (A) dark (B) sun (C) light (D) wind (E) retina (F) eyes (G) photons (H) copper
C

Fact1: Blood pressure is highest in arteries and lowest in veins., Fact2: Blood Pressure Blood Pressure Blood pressure is the force of the blood on the artery walls., Question: is highest in arteries and lowest in veins. (A) matter (B) voltage (C) Length (D) solutes (E) glucose (F) measure (G) Force (H) Joules
G

Fact1: bacteria can cause people to become ill, Fact2: Healthy people become ill, and sick people die., Question: What can bacteria cause people to do? (A) fly (B) harm (C) kill (D) Improve intelligence (E) loss (F) die (G) Grow faster (H) sick
F