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: a stopwatch is used to measure time, Fact2: Reaction time was measured with a stopwatch in minutes and seconds., Question: What is used to measure minutes? (A) light (B) barometer (C) stopwatch (D) weater (E) thermometer (F) lamphreys (G) feedback (H) sound
C

Fact1: a greenhouse is used to protect plants by keeping them warm, Fact2: Flower size varies by plant., Question: How does a greenhouse protect flowers? (A) keeps them away from the sun (B) keeps them warm (C) keeps them out of soil (D) an external framework (E) it needs them (F) keeps them cold (G) rays or beams (H) by indirect light
B

Fact1: Algae have varied life cycles., Fact2: Algae on Turf Plant Pathology Algae on Turf Algae are primitive green plants., Question: what have varied life cycles? (A) h2o (B) remains of prehistoric life (C) the sun (D) oxygen (E) absorb light energy (F) primitive green plants (G) Chlorophyll (H) biological diversity

F