This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: nutrition and digestion, Subject name: Biochemistry
Forces arising from attractions between transient dipoles generated by the rapid movement of electrons of all neutral atoms? 
Select and explain. 
A. Hydrophobic forces, B. Covalent forces, C. Van der Waals forces, D. Electrostatic forces
C: Van der Waals forces
Answer: C: Van der Waals forces 
Explanation: Van der Waals Forcesvan der Waals forces arise from attractions between transient dipoles generated by the rapid movement of electrons of all neutral atoms. Significantly weaker than hydrogen bonds but potentially extremely numerous, van der Waals forces decrease as the sixth power of the distance separating atoms. Thus, they act over very sho distances, typically 2 to 4 A.Ref: Harper&;s Biochemistry; 30th edition; Chapter 2 Water & pH