Answer
The picture is attached below.
Work Step by Step
In an exothermic reaction, reactants are at a higher energy state than the products as shown in the diagram below. Transition state is the top peak of the curve as shown. Activation energy or Ea is the energy required by the reactants in order to reach the transition state. The heat of the reaction or $\Delta$H is shown with a red arrow pointing downwards because the heat is released in an exothermic reaction.
