GED Science Practice

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How is "radar" primarily used in the provided text?

  1. Measuring instrument used to detect and locate distant objects

  2. Use again after processing

  3. Heating a building by radiation from panels containing hot water

  4. Energy that is transmitted in the form of radiation

The correct answer is: Measuring instrument used to detect and locate distant objects

In the provided text, "radar" is primarily used as a measuring instrument to detect and locate distant objects. Options B, C, and D all refer to alternative uses and purposes for the term "radar" and do not accurately describe its primary function in the text. The text may mention other uses, but they are not the primary focus or purpose of "radar". Therefore, option A is the most accurate and appropriate choice.

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