Which Device Would a Sleep Researcher Use to Monitor a Sleeping

question 139

Multiple Choice

Which device would a sleep researcher use to monitor a sleeping person's brain waves?

• A) electromyograph (EMG)
• B) electrocardiograph (EKG)
• C) electro-oculograph (EOG)
• D) electroencephalograph (EEG)

---

Definitions:

Fixed Expenses

Costs that do not fluctuate with the volume of production or sales, such as rent, salaries, and insurance premiums.

Target Profit

The amount of net income a business aims to achieve within a specific period.

Break-Even Point

The level of production or sales at which total revenues equal total expenses, resulting in no net profit or loss.

Variable Cost Per Unit

The cost associated with producing one additional unit of a product, which can change depending on the level of production or sales.