Answer : The correct option is, (A) ionic bonds
Step-by-step explanation:
Ionic bond : It is defined as the bond that is formed by complete transfer of electrons from one atom to another atom.
That means, the atom which looses the electron is known as electropositive atom and the atom which gains the electron is known as electronegative atom.
The ionic bond is usually formed between a metal and a non-metal.
Covalent bond : It is defined as the bond which is formed when sharing of electrons takes place between the atoms.
This is usually formed between two non-metals.
When a transition metal reacts with chlorine then they form ionic bond because transitions metals are metal and chlorine is a non-metal. So, transition metal and chlorine will form an ionic bond.
Hence, the correct option is, (A) ionic bonds