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: tidal energy can be used to produce electricity, Fact2: Tidal energy is renewable ., Question: What can renewable energy be used for? (A) Creating more fossil fuels (B) health (C) Quality of life (D) Measuring water (E) Global warming (F) root growth (G) Electricty (H) staying warm
G

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
B

Fact1: a sandbar is formed by water moving sediment downstream, Fact2: Numerous sandbars and abundant woody debris provide valuable habitat for aquatic species., Question: Water moving sediment downstream can form (A) fissures of hot, acidic water (B) taiga (C) underground systems (D) habitats for aquatic species (E) swamp vegetation (F) hurricanes (G) volcanoes (H) basic building blocks of life

D