Which of the following are considered debt investments?

Treasury bills
Stocks
Collectibles
Cars

To determine which of the following are considered debt investments, we need to understand what debt investments are.

Debt investments refer to financial instruments where an individual or entity lends money to another entity in exchange for regular interest payments and the eventual return of the principal amount. These investments typically involve fixed income and a predetermined repayment schedule.

Now let's consider each option:

1. Treasury bills: Treasury bills are short-term debt instruments issued by the government. They are considered debt investments because investors lend money to the government in exchange for regular interest payments and the repayment of the principal amount when the bills mature.

2. Stocks: Stocks, also known as equities, represent ownership in a company. They are not considered debt investments because owning stocks does not involve lending money to a company. Instead, stockholders have an ownership stake and potential returns come through capital appreciation and dividends.

3. Collectibles: Collectibles, such as rare coins, artwork, or antique items, are not typically considered debt investments. They are tangible assets with potential value appreciation, but they do not involve lending money or fixed income payments.

4. Cars: Cars are not considered debt investments. They are physical assets that depreciate in value over time and do not generate fixed income or involve lending money.

Therefore, from the given options, Treasury bills are the only one considered a debt investment.