A. The mouse was being chased by cat
B. The mouse was chased by cat
C. The mouse is being chased by cat
D. None of these
🧠 Explanation:
Changing the voice of “The cat chased the mouse” to passive results in “The mouse is being chased by the cat.” This shifts focus to the mouse as the subject. For English learners or writers, mastering voice changes improves sentence variety and clarity, making it a key grammar topic for effective communication in writing or speaking.