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: absorbing sunlight causes objects to heat, Fact2: Any object expands when heated and contracts when cooled., Question: absorbing sunlight causes objects to (A) Energy. (B) toughness (C) energy (D) warm (E) power (F) expand (G) photons (H) warmth
[A]: F


[Q]: Fact1: Sponges have specialized cells called collar cells., Fact2: Flagellum of collar cell cause current to pass over collar and food is collected., Question: Which aspect of a sponge's cells allow it to collect food? (A) the cervix (B) teeth (C) flagellum (D) cartilage (E) plasma (F) osculum (G) tissue (H) potassium
[A]: C


[Q]: Fact1: microbial fuel cells convert chemical energy into electrical energy, Fact2: Fuel cells are devices that directly convert hydrogen into electricity., Question: What do microbial fuel cells transform hydrogen into? (A) Renewable energy (B) Electrical energy (C) kinetic energy (D) electromagnetic energy (E) an engine (F) transportation technology (G) Solar energy (H) Oil
[A]:
B