Question

which of the following is an example of cohesion? water sticking to water oil sticking to plastic water sticking to glass hydrogen sticking to oxygen

Explanation:

Cohesion is the attraction between molecules of the same substance. Water sticking to water involves water molecules attracting each other (same substance). Oil - plastic (different), water - glass (adhesion, different), hydrogen - oxygen (chemical bonding, not cohesion) don't fit.

Answer:

A. water sticking to water