Which four are correct?

a
A bond in which electrons are transferred from one atom to another.
b
A bond in which electrons are shared between two atoms.
c
It is a bond between two nonmetals.
d
It is a bond between a metal and a nonmetal.
e
The metal will lose electrons and become a positively charged ion, while the nonmetal gains electrons and becomes a negatively charged ion.
f
The metal will gain electrons and become a negatively charged ion, while the nonmetal loses electrons and becomes a positively charged ion.
g
The bond between Barium and Sulfur in the compound Barium Sulfide (BaS) is an example of an ionic bond.
h
The bond between Nitrogen and Iodine in the compound Nitrogen Triodide (NI3) is an example of an ionic bond.

The correct options are:

b) A bond in which electrons are shared between two atoms.
c) It is a bond between two nonmetals.
g) The bond between Barium and Sulfur in the compound Barium Sulfide (BaS) is an example of an ionic bond.
h) The bond between Nitrogen and Iodine in the compound Nitrogen Triodide (NI3) is an example of an ionic bond.