दिए गए वाक्य का सही कर्तृवाच्य (Active Voice) रूपांतरण चुनें: 'The heritage manuscripts are preserved by the National Archives for future generations.'

Select the option that expresses the given sentence in active voice: 'A notice will have been sent by the town plan authorities to Mr. Smith for vacating the house by the end of the month.'

Select the correct passive form of the given sentence: 'Do you like this yellow stone?'