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Option 3: "than lower intensity"
Explanation: This option is correct because the text states that 'higher intensity is better,' indicating that higher intensity is preferred over lower intensity in the context of treatment for cognitive impairment. This aligns directly with the main idea of the text.
Option 1: "than higher motion"
Explanation: This option is incorrect because the term 'higher motion' does not relate to the context of the text, which discusses doses and intensity in a medical or cognitive context. The text emphasizes the need for higher intensity rather than motion, making this option irrelevant.
Option 2: "than super velocity"
Explanation: This option is incorrect as 'super velocity' is not mentioned or implied in the text. The focus is on intensity in treatment, not on speed or velocity, thus making this option unrelated to the main idea.
Option 4: "than lower speed"
Explanation: This option is incorrect because 'lower speed' does not connect to the discussion of intensity in treatment. The text does not mention speed; it focuses on intensity levels, making this option irrelevant to the context.
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