American sleep experts designed a test that allowed volunteers to spend 13 consecutive nights and 4 nights in the sleep laboratory. Volunteers could sleep for 8 hours in the evening; the next 6 days, their sleep time was shortened to 6 hours late; the last 3 nights, Zhiying; the person appeared "completion", sleep 10 hours a day, test results show that after a few days of lack of sleep, the volunteers each slowed down. Although I feel awake, I am still slow and awkward. It can be seen that after working for one week and lack of sleep, I use 3 nights. Bujuan can improve the state of drowsiness, but it cannot improve the accumulation of cognitive function caused by lack of consciousness. influences. Which of the following, if true, would best support the above conclusion? ['Many volunteers have difficulty adapting to the environment of the sleep laboratory and often dream at night.', 'Volunteers usually sleep differently, with an average sleep time of 6 hours per night.', 'Scan the brain function of volunteers before the experiment and found that there is no obvious abnormality in the brain structure.', 'Volunteers are tested for response sensitivity after complementation, and the sensitivity of most people is significantly lower than usual.']