Final answer:
The subjects will become moody, forgetful, and paranoid.
Step-by-step explanation:
The MOST likely result of subjects staying awake for several days in a row is that they will become moody, forgetful, and paranoid. Sleep deprivation has a significant impact on mental and cognitive functioning. The subjects may experience difficulty concentrating, problem-solving, and regulating emotions. They may also have impaired memory and increased feelings of anxiety.
Learn more about Effects of sleep deprivation