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: Cell division is how organisms grow and repair themselves., Fact2: Cell division is by mitosis ., Question: What is required by division? (A) voltage (B) Microscope (C) loose soil (D) Energy. (E) Energy (F) relocation (G) warmth (H) mitosis
H

Fact1: a mirror is used for reflecting light, Fact2: Light seems to travel in rays or beams., Question: what can a mirror be used to reflect? (A) noble gases (B) air particles (C) glass (D) focusing a lens (E) rays or beams (F) photons (G) sun's heat (H) an electron lens
E

Fact1: if an object in a fluid is more dense than that fluid then that object will sink in that fluid because of gravity, Fact2: Waves can be created at the boundary between fluids of different densities., Question: objects will sink between boundaries with different what due to gravity (A) Energy. (B) surfaces (C) densities (D) forces (E) rocks (F) minerals (G) energy (H) heat energy

C