Active voice is a grammatical structure where the subject of the sentence performs the action. In this construction, the subject comes first, followed by the verb and then the object. For example, in the sentence “The cat chased the mouse,” the cat is the doer of the action, making the sentence clear and direct. Using active voice often makes writing more engaging and easier to understand. It emphasizes the subject's role in the action, which can enhance clarity. In contrast, passive voice can obscure who is responsible for the action, making sentences longer and more complex.