In this task, you need to answer basic science questions. For each question, several terms are intentionally masked with ***. This masking can cover very few or many of the question words. Clearly, if masked terms are important, the modified question will be impossible to answer. Please indicate the correct answer with one of the following responses: "A", "B", "C", "D" or "E". While "A"-"D" correspond to the answer options provided in the input, "E" represents "I don't know" for questions that do not provide enough information. Respond via "E" if the question is not answerable. Do not generate anything else apart from one of the following characters: 'A', 'B, 'C', 'D', 'E'.

Q: Question: A *** puts *** *** *** *** the same *** and *** of soil. She gives them the same *** of water. She puts one of these *** *** *** *** *** and the other *** *** dark ***. This *** *** how the *** respond to  (A) light (B) air (C) water (D) soil.

A: E.
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Q: Question: When an octopus feels threatened, it can release black ink into the water. The ink MOST likely helps the octopus  (A) move quickly through the water. (B) breathe oxygen from the water. (C) hide from predators. (D) use food faster.

A: C.
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Q: Question: Which example best shows structures that make up the *** *** in the human body?  (A) heart, blood, vessels (B) nose, trachea, lungs (C) brain, spinal cord, nerves (D) esophagus, stomach, intestine.

A:
E.
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