Final answer:
The sentence 'Kezia invited Lil and Else into the courtyard' is in the active voice.
Step-by-step explanation:
The sentence 'Kezia invited Lil and Else into the courtyard' is in the active voice. In active voice sentences, the subject performs the action expressed by the verb. In this case, Kezia (the subject) is performing the action of inviting (the verb) Lil and Else (the objects) into the courtyard.
Learn more about Active and passive voice