Hey!
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Answer:
B. Lack of sunlight
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Step-by-step explanation:
A plant can't grow without sunlight because a plant uses the sun to create food using photosynthesis. Too much water won't hurt the plant. Lithium is absorbed by the plant which is a kind of food it isn't very important if it does contain it. Monosaccharides is a kind of sugar that plants can take as food as well but it isn't as important as the food they receive from photosynthesis.
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Hope This Helped! Good Luck!