The weakest attractive force among these is: a. london force b. hydrogen bonding c. dipole-dipole attractions d. london-dispersion forces

The weakest  attractive  force is   london - dispersion forces

Explanation

London- dispersion  forces  is  aweak  van  der waal  forces.
London  dispersion  forces is  the weakest  intermolecular forces.
Is  a temporary  attractive force  when electron in two  force that result  when electron in two adjacent  atoms occupy  position that make  the atoms form a temporary   dipoles.