Convert into Passive Voice;"Are they playing a match against them?"

Explanation

The original sentence "Are they playing a match against them?" is in active voice, where the subject "they" performs the action of playing.- To convert it to passive voice, we need to make the match the subject, and the action (playing) is performed on it. Hence, the correct passive voice construction is "Is a match being played against them?"- This construction emphasizes the match, rather than the people performing the action (they).