Select the correct passive form of 'We insist on punctuality in this office '

A It is to be insisted that punctuality should being this office

B Punctuality should be insisted in this office

C Punctuality is insisted on in this office

D Punctuality be insisted in this office

Correct Answer: Option C

present indefinite tense -এ থাকা assertive sentence কে passive করার নিয়ম - object কে sub+am/is/are +v3 +বাকি অংশ (by+subject কে object).