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Lena would like to be able to know her exact location on a map as she travels across the country. Which technology would best help Lena? CB radio, because it uses HF radio waves. MRI, because it uses

Lena would like to be able to know her exact location on a map as she travels across the country. Which technology would best help Lena?

CB radio, because it uses HF radio waves.

MRI, because it uses magnets to produce a picture radio.

telescope, because it captures radio waves from space.

GPS, because it uses satellites that provide position and velocity data.

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