TASK DEFINITION: You are given an elementary science question along with a few answer options. List all the words from the question that are essential and sufficient for choosing the correct answer option. Keep in mind that essential words are necessary to understand the meaning of the given question. However, non-essential words provide little information needed to select the correct answer. You can think about it like this: If the question was in another language, knowing the meaning of which words were necessary and enough for you to understand the question and answer it?. If your answer consists of multiple spans of words from the question, separate those using a comma (", "). Do not generate any word that is not present in the question. Make sure that your response is contained in the given question and the words are in the same order as the question.
 Grammatical correctness is not important.
PROBLEM: Question: Sue is making an electrical circuit using a battery and three light bulbs. The circuit is correctly linked in SERIES. Which will happen if one of the lights burns out? (A) A short circuit will occur. (B) Current flow will continue, but the burnt out light will not shine. (C) Only the burnt out light will not shine. (D) None of the lights will shine.?

SOLUTION: electrical, circuit, battery, light, bulbs., linked, SERIES., happen, one, lights, burns, out?

PROBLEM: Question: What do plants take from the air that helps them make food? (A) oxygen (B) nitrogen (C) carbon dioxide (D) hydrogen peroxide?

SOLUTION: plants, air, make, food?

PROBLEM: Question: Angelo wants to know if the volume of water changes when it freezes. He measures the volume of water in its liquid state and then freezes it. Which tool did Angelo most likely use to measure the volume of the water? (A) a microscope (B) a thermometer (C) a balance scale (D) a graduated cylinder?

SOLUTION:
volume, water, changes, freezes., measures, volume, water, freezes, tool, measure, volume, water?