Answer:
The correct answer is - beta waves.
Step-by-step explanation:
Brain activity is characterized by various waves of frequencies that explains the type of activity is an individual experiencing at the movement. These waves or rhythms are alpha waves or beta waves.
Elizabeth is awake and alert while playing video game is characterized as beta waves as electrical activity of the brain which is fall under 12 to 30 Hz which is known as waking and alert consciousness with enhanced concentration and alertness with improved memory.
Thus, the correct answer is - beta waves.