Answer : The correct option is, double covalent bond.
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.
In the given image, two oxygen atoms combine with 1 carbon atom and form
as a molecule.
In
molecule, carbon is a non-metal and oxygen is also non-metal. So, carbon and oxygen will form a covalent bond.
That means, two oxygen atoms combine with 1 carbon atom by two covalent bond or double covalent bond.
Hence, the correct option is, double covalent bond.