Question

cohesion explains how plants get water to the top because
the water molecules stick to the side of the xylem and dont let go.
the water molecules stick together and pull each other up.

Explanation:

Cohesion is the attraction between like - molecules. In plants, water molecules are cohesive and stick together. This allows them to be pulled up through the xylem as a continuous column. Adhesion is the attraction between unlike - molecules (like water and xylem walls), but the question is about cohesion.

Answer:

the water molecules stick together and pull each other up.