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: Gymnosperms are vascular plants that produce seeds in cones., Fact2: Plants reproduce by seeds and rhizomes., Question: What do gymnosperms use to reproduce? (A) roots (B) cones (C) ovaries (D) family (E) CO 2 (F) instinct (G) embryos (H) Mitosis
B

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
B

Fact1: Climate influences plant growth, biodiversity, and adaptations of land organisms., Fact2: Biodiversity also increases the beauty of the planet., Question: What does the climate influence? (A) space (B) thoughts (C) Beauty of the planet (D) local weather changes (E) stars (F) biological diversity (G) Animal survival (H) vegetation
C