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Option 3: "Brain runs all the encoding processes during sleep"
Explanation: This option is correct as the text highlights that the brain needs sleep to encode information appropriately, which is a crucial function of sleep. It directly supports the idea that encoding processes occur during sleep.
Option 1: "Our bodies are immobilized"
Explanation: The text mentions that people thought sleep was for immobilization, but it does not state that this is a function of sleep. Instead, it emphasizes that sleep serves multiple necessary functions, such as processing information.
Option 2: "Brain goes through the information obtained during the day"
Explanation: This option is incorrect because the text explicitly states that during sleep, the brain processes information learned during the day, indicating that this is indeed a function of sleep.
Option 4: "Our brain performs functions to add information to our long term memory"
Explanation: This option is incorrect because the text states that sleep is necessary for adding information to long-term memory, confirming that this is a function that occurs during sleep.
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