Active voice is a grammatical voice common in many languages, including English and most other Indo-European languages. In active voice, the subject of the sentence performs the action expressed by the verb. This results in clear and concise sentences, making the meaning easily understandable for readers. It is often preferred in non-scientific writing and is more emphatic and direct than passive voice. An example of a sentence in active voice is "The dog chases the ball," where the subject "dog" performs the action "chase" on the object "ball".