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 pituitary hormones control other endocrine glands., Fact2: An abnormal endocrine gland is often blamed for producing obesity., Question: pituitary hormones can be blamed for what? (A) a lot of human deaths (B) Plant growth is reduced (C) harmful substances (D) Dehydration (E) matter vibrating (F) producing obesity (G) major threat to health (H) Leptospirosis
F

Fact1: Hydrogen bonds cause water to expand when it freezes., Fact2: Deuterium, or heavy hydrogen, is an isotope of hydrogen, or a hydrogen atom with a neutron added., Question: The bonds of that which when heavy is Deuterium cause what to expand when it freezes? (A) matter (B) rings (C) CO 2 (D) liquids (E) gas (F) solutes (G) cations (H) water
H

Fact1: Active immunity results when an immune response to a pathogen produces memory cells., Fact2: People with weaker immune systems are more likely to get sick from contaminated foods., Question: What helps keep people from getting sick? (A) virus (B) sweating (C) bacteria (D) sensory neurons (E) Exfoliation (F) layers of fat (G) trees (H) Memory cells

H