Which of the following best describes the SI system and one of its main benefits?

• A. The SI system is an internationally accepted set of units that allows scientists to communicate measurements consistently worldwide.
• B. The SI system is a set of units used only in the United States and is not recognized internationally.
• C. The SI system is a collection of units based on historical conventions, which often leads to confusion in scientific communication.
• D. The SI system is a group of units that are only used for measuring temperature and pressure.

Answer: (A)

Verified step by step guidance

1. Understand that the SI system, or the International System of Units, is a standardized system used globally for scientific measurements.
2. Recognize that the main purpose of the SI system is to provide a consistent and universally accepted set of units, which helps scientists communicate their results clearly and avoid confusion.
3. Note that the SI system is not limited to any single country, such as the United States, but is used internationally.
4. Realize that the SI system is comprehensive and covers a wide range of measurements, not just temperature and pressure.
5. Conclude that the best description of the SI system is that it is an internationally accepted set of units that allows scientists to communicate measurements consistently worldwide.