What is a magnetosphere?

Question

Quizplus · Accepted Answer

A magnetosphere is a region of space around a planet in which the planet's magnetic field can trap charged particles. These charged particles, such as the solar wind, are directed around the planet, creating a bubble-like structure. Particles from the solar wind can also get trapped in the magnetosphere, creating auroras in the atmosphere.

Answer: B, D 
 The layer of a planet in which its magnetic field is generated is called the dynamo layer, not the magnetosphere. The magnetosphere is the region in space around a planet in which its magnetic field interacts with charged particles. While auroras do occur within the magnetosphere, they specifically occur in the region called the auroral zone, not throughout the entire magnetosphere.

What Is a Magnetosphere