Writing in the active voice makes the meaning clear while keeping sentences from becoming complicated and wordy. Sentences using passive voice are not necessarily wrong, just less effective than ...

Active voice would give you a sentence like the cat (agent/subject) chased the mouse (patient/object). In the passive voice, ...

Active income is earned from working, while passive income usually comes from investments. While active income is often more secure, passive income can be a great addition to your financial plan ...