Choose the One Alternative That Best Completes the Statement or Answers

question 60

Multiple Choice

Choose the one alternative that best completes the statement or answers the question.
-A certain radioactive isotope has a half-life of approximately 1250 years. How many years to the nearest year would be required for a given amount of this isotope to decay to $70 \%$ of that amount?

• A) \(375 \mathrm { yr }\)
• B) \(2171 \mathrm { yr }\)
• C) \(573 \mathrm { yr }\)
• D) \(643 \mathrm { yr }\)

---

Definitions:

Peach

A type of fruit known for its juicy, sweet flavor and fuzzy exterior.

Lemon

A product, often a used car, that is found to be defective only after it has been bought.

Corolla

The collective term for the petals of a flower, which are usually colored and serve to attract pollinators.

Adverse Selection

A situation where asymmetric information results in high-risk individuals being more likely to engage in agreements, often observed in insurance markets.