You are given a science question (hard-level) and four answer options (associated with "A", "B", "C", "D"). Your task is to find the correct answer based on scientific facts, knowledge, and reasoning. Do not generate anything else apart from one of the following characters: 'A', 'B, 'C', 'D'. There is only one correct answer for each question.

Tanya investigates which household objects are attracted to magnets. Which will help her make a conclusion?  
 (A) a prediction (B) a hypothesis (C) a list of supplies (D) a table of results
D

Eyeglasses have two arms called temples attached to the eye lenses by very small hinges. Which of these functions like the hinges on eyeglasses?  
 (A) knee (B) fingers (C) neck vertebrae (D) base of the thumb
A

Water in the solid phase has a crystal structure which keeps molecules farther apart than water at certain temperatures in the liquid phase. This relationship explains which property?  
 (A) the presence of more impurities in ice than in liquid water (B) the ability of ice to float on liquid water (C) the release of heat when liquid water turns into ice (D) the cooling of liquid water as it flows over ice

B