I'll give you a question, please answer with step-by-step reasoning process. Sarah loved riding horse but she was having pain in his legs because of it. She was experiencing what sesation?\nOptions:\n- bouncing\n- shaky\n- fear\n- movement\n- stiffness

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Stiffness in legs cause pain. Riding horse sometimes cause stiffness in legs.
The answer: stiffness.
Assistant