What is magnetic reconnection?
A) The reversal of the Sun's magnetic field,which occurs approximately every 11 years
B) The cancellation of the magnetic fields of the northern and southern sunspots when they meet at the Sun's equator
C) The rearrangement of magnetic fields in adjacent arches in the solar atmosphere,with the consequent release of great energy
D) The merging of the triplet of spectral lines in the Zeeman effect into a single line when the magnetic field is removed
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