Which of the following is the strongest type of interaction that occurs between the atoms within the circled areas of the two molecules represented above?

In the image, hydrogen is bound to a highly electronegative atom (N, O). This type of intermolecular attraction is called hydrogen bonding.

London dispersion forces are present, but typically weaker than hydrogen bonds.

There is no bond present in the circled region, so the first two options are not revelant.