Which of the following explains the concave meniscus of water in a glass tube?

A. The adhesion between water and glass is greater than the cohesion between water molecules
B. The cohesion between water molecule is greater than the adhesion between glass and water
C. The molecules of water in the glass are moving faster than the molecules in the other parts
D. The molecules of water at the water-air boundary are often attracted to the center of the tube
E. The weight of the water pulls the central part of the surface down

Correct Answer:

Option A – The adhesion between water and glass is greater than the cohesion between water molecules