Q. With reference to Solar flares, consider the following statements:
1.Solar flares are energetic releases of electromagnetic from the surface of the Sun, caused by the localised twisting and realignment of the Sun’s magnetic field. 
2.C-class, a type of solar flares, are large, that have the power to cause global radio blackouts and persistent radiation storms in the upper atmosphere.
3.Solar flares have the potential to affect the GPS system on Earth.
Which of the statements given above is/are correct?

[A] 1 only

[B] 1 and 3 only

[C] 2 and 3 only

[D] 1, 2 and 3

Answer: B
Notes:

Explanation –

Statements 1 and 3 are correct.  Solar flares are energetic releases of electromagnetic from the surface of the Sun, caused by the localised twisting and realignment of the Sun’s magnetic field. Solar flares have the potential to affect the GPS and internet system on Earth.

Statement 2 is incorrect. C-class flares are slight and have little effect on the Earth whereas X-class flares are large, significant events that have the power to cause global radio blackouts and persistent radiation storms in the upper atmosphere.

Source: ForumIAS