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").

[Q]: Fact1: poisonous darts are used for defense by sea anemones, Fact2: Protection at the gateway is the best defense., Question: What are used as protection by sea anemones? (A) lamphreys (B) poisonous darts (C) tubular organ (D) feed on dead protists (E) coelenterates (F) islets of Langerhans (G) related organisms (H) moisturize their skin
[A]: B


[Q]: Fact1: unequal heating of Earth 's surface by the Sun causes global wind patterns, Fact2: Wind belts in the Atlantic Ocean include the trade winds and the prevailing westerlies ., Question: What causes the westerlies? (A) flow of electrons (B) Ocean currents (C) Precipitation (D) to move people (E) Drought (F) scattered light (G) Uneven heating by the sun (H) exposure to cold
[A]: G


[Q]: Fact1: a spider web is used to capture food by spiders, Fact2: Black widow spiders construct funnel-shaped webs., Question: What uses webs to capture food? (A) animals (B) dogs (C) each species (D) related organisms (E) Monogamous species (F) black widows (G) fish (H) lizards
[A]:
F