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").

[EX Q]: Fact1: Biodiversity increases the productivity and stability of ecosystems., Fact2: Ecotourism, on the other hand, can help to conserve biodiversity., Question: What increases the stability of ecosystems? (A) overpopulation (B) water consumption (C) loose soil (D) Quality of life (E) agriculture (F) deforestation (G) ecotourism (H) trees
[EX A]: G

[EX Q]: Fact1: Most salamanders use their sense of smell to find a mate., Fact2: Like frogs, salamanders are amphibians., Question: What uses its sense of smell to find a mate? (A) the Sun (B) peachleaf willow (C) rocks (D) fur seals (E) warm-blooded (F) trees (G) passenger pigeons (H) some amphibians
[EX A]: H

[EX Q]: Fact1: crossing two living things with recessive traits causes their offspring to have that recessive trait, Fact2: Freckles are an autosomal recessive trait., Question: Crossing two living things with freckles will cause their what to have it also? (A) siblings (B) predators (C) coded genes (D) chromosomes (E) haploid (F) offspring (G) parents (H) colors
[EX A]:
F