Detailed Instructions: 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").
Problem:Fact1: a greenhouse is used to protect plants by keeping them warm, Fact2: Angiosperms are the flowering plants., Question: A greenhouse is used to protect angiosperms how? (A) their hosts (B) by keeping them underground (C) by keeping them warm (D) by keeping them outside (E) by keeping them exposed (F) Exfoliation (G) organisms and their habitat (H) In the winter
Solution:
C