Select the correct answer.

which statement best explains how electrons form a covalent bond in a molecule?

a.

a pair of electrons splits so that each atom gets one electron.

b.

a pair of electrons belongs to two atoms at the same time.

c.

a pair of electrons is transferred from one atom to another atom.

d.

a pair of electrons moves from a lower energy level to a higher energy level.

e.

a pair of electrons drifts freely from one molecule to another.