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.
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Question: Which of the following distinguishes the organisms in the kingdom Fungi from other eukaryotic organisms?  
 (A) Fungi are unicellular. (B) Fungi reproduce sexually. (C) Fungi obtain nutrients by absorption. (D) Fungi make food through photosynthesis.

Answer: C


Question: A container is filled with a mixture of sand and an unknown substance. What should a student do to determine whether iron particles are in the mixture?  
 (A) heat the mixture (B) filter the mixture (C) pour water into the mixture (D) pull a magnet through the mixture

Answer: D


Question: A student wishes to measure the rate of evaporation of a volatile liquid at room temperature. Which piece of equipment would be best to use in this investigation?  
 (A) balance (B) microscope (C) meter stick (D) litmus paper

Answer:
A