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").
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Question: Fact1: Some pelycosaurs gave rise to a group of animals called therapsids., Fact2: Pelycosaurs are an important lineage preserved in the fossil record., Question: How do we know the lineage of therapsids? (A) Laboratory (B) dinosaurs (C) prokaryotic cells (D) some anthozoans (E) fossil record (F) oral tradition (G) polygenic (H) calibrated

Answer: E

Question: Fact1: chemical weathering causes iron in rock to oxidize, Fact2: Oxides Oxides Oxides are elements combined with oxygen., Question: Chemical weathering causes iron in rock to combine with what? (A) uranium (B) oxygen (C) cartilage (D) nothing (E) an object (F) vacuum (G) energy (H) heat

Answer: B

Question: Fact1: Echinoderms have a unique water vascular system with tube feet., Fact2: Echinoderms are represented by the starfish., Question: What kind of animals has a water vascular system with tubed feet? (A) animals (B) starfish (C) reeds (D) insects (E) warm-blooded (F) sponges (G) sea coral (H) four limbs

Answer:
B