The smugglers did not realise that their conversation was being recorded.

Options

A. The smugglers did not realise that someone was recording their conversation.
B. Someone did not realise that the smugglers were recording their conversation.
C. Conversation was recorded when the smugglers did not realise.
D. The smugglers recorded their conversation without realising.

Answer

A

Explanation

The smugglers did not realise that someone was recording their Conversation. (Active)
The sentence ls in Past Continuous Tense. (Passive) The smugglers did not realise that their conversation was being recorded