instruction:
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").
question:
Fact1: Bottleneck effect occurs when a population suddenly gets much smaller., Fact2: Fishing pressure is relatively low due to a smaller human population., Question: What can make the bottleneck effect occur in fish? (A) increased habitat (B) acid rain (C) humans (D) Winter (E) increased food (F) storms (G) increased resources (H) Toxicity
answer:
C


question:
Fact1: hydropower requires damming a river, Fact2: Another source of energy is hydropower., Question: What is a source of energy? (A) fossil fuels (B) cooking (C) damming a river (D) sleeping (E) napping (F) Electrical energy (G) our nearest star (H) sunlight
answer:
C


question:
Fact1: Echinoderms have a unique water vascular system with tube feet., Fact2: Echinoderms in the diorama include the crinoids and blastoids., Question: What has a water vascular system with tube feet? (A) humans (B) blastoids (C) bushes (D) orchids (E) Most plants (F) ferns (G) bacteria (H) the Sun
answer:

B