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: melting means changing from a solid into a liquid by adding heat energy, Fact2: Ice is the solid form of water., Question: What changes ice to water by adding heat energy? (A) mussels (B) melting (C) freezing (D) fertilization (E) storms (F) boiling (G) engines (H) condensation
B

Fact1: if two balanced forces act on an object in opposite directions then that object will remain stationary, Fact2: If an object is at equilibrium, then the forces are balanced., Question: Two forces at an equilibrium on an object in opposite directions will keep the object what? (A) energy (B) yanked (C) mechanical (D) moving (E) stationary (F) It will move. (G) kinetic energy (H) pulled

E