Earth's magnetic field is important because the magnetic field shields the planet from harmful ? from the sun.
A. heat
B. radiation
C. solar flares
D. solar winds

The answer is D, solar winds. The magnetic field deflects most of the solar winds, which otherwise would’ve chipped away at the ozone layer that protects the Earth from things such as UV rays/radiation.

So, D is your answer.

the thirteen colonies are:

connecticut, delaware, georgia, maryland, massachusetts, new jersey, new york, new hampshire, north carolina, pennsylvania, rhode island, south carolina, virginia