What is the name of the attractive force
between water molecules and the walls of
the xylem tubes?
diffusion
polar attraction
adhesion
cohesion

Adhesion

Explanation:

A good way to guess this answer is the key word "attract"

Adhesion means to stick to other substances.

hydrogen is a compound or a single element and a element is a pure substence that cannot be separated into simpler subtances

clorine is a compound its a chemical substance that forms when two or more different elements combine

so both hydrogen and clorine are compounds