For liquids, which of the following factors affect vapor pressure?

a. intermolecular forces
b. volume
c. temperature
d. surface area
e. humidity

Intermolecular forces and tempertaure are the factors which will affect vapor pressure.

Explanation:

Vapor pressure is defined as the pressure exerted by vapors or gas on the surface of a liquid.

More is the vapor pressure of a substance more will be the kinetic energy present within its molecules. As a result, weaker will be the intermolecular forces present within a substance.  

Hence, more readily the substance will change into vapor state.

Also, when we increase the temperature for a substance then there occurs movement of the molecules. As a result, collisions tends to increase within the molecules and hence, intermolecular forces become weaker.

Therefore, temperature will affect the vapor pressure of a substance.

Thus, we can conclude that intermolecular forces and tempertaure are the factors which will affect vapor pressure.