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: matter vibrating can cause sound, Fact2: Thus, sound is a wave in air ., Question: what can matter vibrating cause? (A) Pollution (B) energy (C) Relieve pain (D) kinetic energy (E) wave in air (F) Energy. (G) murmur (H) Greenhouse gases
E

Fact1: the emission of sulfur dioxide causes acid rain, Fact2: The sulfur dioxide is converted into sulfuric acid., Question: what causes acid rain? (A) gases (B) rainfall (C) Pollution (D) fossil fuels (E) emissions (F) vehicles (G) burning (H) wind
E

Fact1: Fertilization occurs when a sperm and an egg fuse to form a diploid zygote., Fact2: Sperm and eggs are cells known as gametes., Question: What occurs when gametes fuse to form a diploid zygote? (A) permineralization (B) rapid expansion (C) competition (D) fertilization (E) photosynthesis (F) chromosomes (G) mutation (H) Leptospirosis

D