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: ultraviolet light causes sunburn, Fact2: Furthermore, sunburn can cause premature aging and skin cancers., Question: What can ultraviolet light cause? (A) chemical changes (B) Cold skin (C) killing insects (D) Healthy skin (E) disease (F) Skin cancer (G) symptoms (H) Low temperatures
F

Fact1: Organisms cluster around hydrothermal vents in the ocean floor., Fact2: Background Hot water vents form inside cracks in the ocean floor., Question: Organisms cluster around hot water inside cracks where? (A) loose soil (B) ocean floor (C) food and shelter (D) tectonic plates (E) the ground (F) allow growth (G) Absorb light (H) survive
B

Fact1: water vapor cooling causes that water vapor to condense, Fact2: All carcasses are chilled with cool air for 48 hours., Question: What causes water vapor to condense? (A) water vapor exploding (B) water vapor heating up (C) water vapor disappearing (D) circulatory systems (E) aqueous solution (F) Heat energy (G) water vapor chilling (H) Evaporation

G