You are given a science question (easy-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.

Q: Which series correctly represents the levels of organization in an organism?  
 (A) cells -> organs -> organ system -> tissue (B) cells -> tissue -> organs -> organ system (C) tissue -> cells -> organ system -> organs (D) tissue -> organ system -> cells -> organs

A: B
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Q: In which of these organs does most absorption of nutrients take place?  
 (A) liver (B) stomach (C) small intestine (D) large intestine

A: C
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Q: An object is moving in a straight line at a constant speed. What will happen to the object if no outside force acts on the object?  
 (A) The speed and direction of the object will change. (B) The speed and direction of the object will not change. (C) The direction of the object will change; the speed will remain constant. (D) The speed of the object will change; the direction will remain constant.

A:
B
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