The foreces of attraction between molecules of I2 are:

covalent bonds
ionic bonds
dipole-dipole attractions
london forces
hydrogen bonds

I prefer to call these forces instantaneous dipole-induced dipole (which is not one of the choices) or induced dipole-induced dipole (also not a choice). Many texts don't agree on what to call all the forces. I have seen them called dispersion forces, London force, and van der Waals forces. London forces (should be a capital L because these forces are named after Fritz London) is the only answer you have that fits. Texts agree on definitions and names for covalent bonds, ionic bonds, dipole-diple attraction, and hydrogen bonding.

The forces of attraction between molecules of I2, which refers to molecular iodine, include:

1. Covalent Bonds: The primary force of attraction between the iodine atoms within the I2 molecule is a covalent bond. Covalent bonds involve the sharing of electrons between atoms, and in this case, the two iodine atoms share a pair of electrons to form a stable I2 molecule.

2. London Forces: I2 molecules also experience London forces, also known as van der Waals forces or dispersion forces. These forces arise due to temporary fluctuations in electron distribution within a molecule, leading to temporary partial positive and partial negative charges. These induced charges create attractive forces between neighboring I2 molecules, contributing to their overall attraction.

3. Dipole-Dipole Attractions: Unlike some other diatomic molecules like HCl or HBr, I2 does not exhibit a permanent dipole moment. Therefore, dipole-dipole attractions, which depend on the permanent difference in electric charge across a molecule, are not significant in I2.

4. Hydrogen Bonds: Hydrogen bonding occurs when a hydrogen atom is bonded to a highly electronegative atom (such as oxygen, nitrogen, or fluorine) and it interacts with another electronegative atom in a different molecule. Since I2 does not contain highly electronegative atoms, it does not form hydrogen bonds.

Therefore, the major forces of attraction between molecules of I2 are covalent bonds and London forces.