The best statement describing the potential energy diagram of an endothermic reaction is:

The products have a higher potential energy than the reactants.

Here's why:

* Endothermic reactions: These reactions absorb energy from their surroundings. This means energy is required to break bonds in the reactants and form new bonds in the products.

* Potential energy diagram: This diagram shows the energy changes during a reaction.

* Higher product energy: Since energy is absorbed, the products of an endothermic reaction will have a higher potential energy than the reactants. This is represented by the products being positioned at a higher energy level on the diagram than the reactants.

Let me know if you'd like a visual representation of an endothermic potential energy diagram!