The Stage of Sleep in Which Delta Waves Begin to Appear

question 172

Multiple Choice

The stage of sleep in which delta waves begin to appear is ________ sleep.

• A) Stage 1 (N1)
• B) Stage 2 (N2)
• C) Stage 3 (N3)
• D) REM

---

Definitions:

Price-earnings Ratio

A valuation metric for companies, calculated by dividing the current market price of a stock by its earnings per share (EPS).

Dividend Yield Ratio

A financial ratio that indicates how much a company pays out in dividends each year relative to its stock price, typically expressed as a percentage.

Earnings per Share

A financial ratio that measures the amount of net income earned per share of common stock. It is an indicator of a company's profitability.

Dividend Payout Ratio

The proportion of earnings a company pays to its shareholders in the form of dividends, expressed as a percentage of the company's total earnings.