What is the magnetosphere?
a. a stream of electrically charged particles flowing at high speeds from the sun
b. the region of earth’s magnetic field shaped by the solar wind
c. a glowing region in the atmosphere caused by charged particles from the sun
d. the angle between geographic north and the magnetic pole in the northern hemisphere

b. the region of Earth’s magnetic field shaped by the solar wind

Explanation:

A magnetosphere is a region around any celestial body producing magnetic field. It is the portion of magnetic field around the Earth which interacts with the charged particles emitting from the sun at high speeds. It is a pear shaped  magnetic field region surrounding the Earth. It is shaped by the solar wind.

Thus, the correct answer is b. the region of Earth’s magnetic field shaped by the solar wind

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i believe the answer would be b. hope it : )