Which is a true statement about a Curie?

A Curie is a unit of radioactivity that quantifies the amount of radioactive decay occurring in a sample. It is defined as the activity of a quantity of radioactive material in which one disintegration occurs per second. This unit honors the pioneering work of Marie Curie, who conducted extensive research in radioactivity. Understanding the concept of curies is crucial for assessing the safety and risks associated with radioactive materials in environments where radon mitigation may be necessary.

The other choices refer to different scientific measurements: volume is typically measured in liters or cubic meters, air pressure is measured in units like pascals or atmospheres, and temperature is measured in degrees Celsius or Fahrenheit. Therefore, only the statement identifying a Curie as a unit of radioactivity accurately describes its significance and application in fields related to radiation and safety.