Read this excerpt. Which two factors can cause people to have trouble keeping their brain in sync?

The correct answers are B lack of sleep and C level of stress.

Explanation: Lack of sleep can significantly impair cognitive function, making it difficult for the brain to stay alert and focused. Additionally, high levels of stress can disrupt normal brain function and hinder concentration and decision-making, further causing synchronization issues in brain activity. If you have any more questions, feel free to ask!