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: Bivalves feed on plankton and nonliving organic matter., Fact2: Mussels are bivalve mollusks., Question: What feeds on plankton and nonliving organic matter? (A) barnacles (B) mollusks (C) animals (D) the Sun (E) sharks (F) graptolites (G) bacteria (H) dogs
B

Fact1: pathogens can cause disease, Fact2: Fungi are significant pathogens., Question: What can fungi do? (A) protect them (B) survive (C) Spread disease (D) migrate (E) hydrate their cells (F) decrease stamina (G) reproduce (H) aerobic capacity
C

Fact1: cutting down trees has a negative impact on an ecosystem, Fact2: Students take a field trip to an ecosystem to observe the homes of animals in natural habitats., Question: Cutting down trees has a what on the homes of animals in natural habitats? (A) neutral impact (B) deforestation (C) positive impact (D) no impact (E) threatened (F) Decrease bodily water (G) massive damage (H) negative impact

H