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 thing provide position and velocity data

GPS is the best technology that helps Lena to know her exact location on a map as she travels across the country. This is because GPS is a radio navigation system that uses satellite signals to locate a radio receiver.

What is a Global positioning system?

The Global Positioning System (GPS) is a radio-navigation system that uses satellites broadcasting navigation signals to find the location of a radio receiver.

Which technology was Lena used?

Here it is given that,

Lena would like to be able to know her exact location on a map as she travels across the country. So, she uses GPS technology. This is because it uses satellites for tracking locations on maps using radio signals between ground stations.

The other technologies have been given over there like CB radio, MRI, and radio telescope uses high-frequency waves and huge machinery. This results in some difficulty for her to know the exact location. Thus, the best and easiest way of locating a position or place is GPS technology.

Learn more about GPS here:

https://brainly.com/question/17295545

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