Which statement best describes how an ionic bond forms?
a. the transfer of electrons forms strong bonds between ions.
b. the sharing of electrons forms strong bonds between ions.
c. the transfer of electrons results in attractive forces between molecules.
d. the sharing of electrons results in attractive forces between molecules.

The question says,'which statement best describes how an ionic bond forms. The correct option is A. Ionic bonds are formed as a result of complete transfer of electrovalence electrons from one atom to another. The atom that donate the electron become a positively charged ion while the atom that received the atom become a negatively charged ion.

Outermost (valence) electrons