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").

[EX Q]: Fact1: a mutation in the sex cells of a parent can cause a new trait to appear in the parent 's offspring, Fact2: Animals that reproduce sexually produce sex cells, or gametes., Question: a mutation in the _ of a parent can cause a new trait to appear in the parent 's offspring (A) eggs (B) courtship (C) mitochondria (D) alleles (E) pollen (F) gametes (G) ATP (H) hormones
[EX A]: F

[EX Q]: Fact1: Some touch receptors sense differences in temperature or pain., Fact2: Touch receptors are free nerve endings or nerve endings that are surrounded by a capsule., Question: What senses differences in temperature? (A) the skin (B) Electric devices (C) animals (D) an electric stove (E) nerve endings (F) an organism's body (G) Most plants (H) peachleaf willow
[EX A]: E

[EX Q]: Fact1: a watch is used for measuring time, Fact2: Times are measured in seconds., Question: What can be used to measure seconds? (A) Watch (B) seconds (C) fluid (D) Ruler (E) goggles (F) glasses (G) Drill (H) Scale
[EX A]:
A