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: most canyons are formed by flowing rivers through erosion over long periods of time, Fact2: Canyon formed as a consequence of river erosion., Question: what does erosion form? (A) valleys (B) Sediment (C) mountains (D) canyons (E) soils (F) hills (G) soft soil (H) loose soil
D

Fact1: a plant requires sunlight for photosynthesis, Fact2: Photosynthesis is the process of making food., Question: What do plants require to make food? (A) nutrients (B) sunlight (C) photons (D) Energy. (E) Light (F) Proteins (G) power (H) heat energy
B

Fact1: Algae have varied life cycles., Fact2: Desmids are green algae, members of the Chlorophyta., Question: What kind of life cycle do desmids have? (A) allow growth (B) Leptospirosis (C) varied life cycle (D) solid, liquid, gas (E) Veins and arteries. (F) immortal (G) fixed life cycle (H) static life cycle

C