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: Biomass is the total mass of organisms at a trophic level., Fact2: Each stage is a trophic level., Question: The total mass of organisms in an environmental stage is called what? (A) food pyramid (B) extinction (C) ecological pyramid (D) food chain (E) vegetation (F) food (G) ligt (H) biomass
[A]: H


[Q]: Fact1: Most plants continue to grow throughout their lives., Fact2: Roses are among the hardiest of all plants., Question: what continues to grow throughout their lives? (A) hair (B) apples (C) roses (D) cacti (E) flowers (F) Trees (G) fungus (H) ovaries
[A]:
C