A sentence has been given in Active/Passive Voice. Out of the four given alternatives, select the one which best expresses the same sentence in Passive/Active Voice.
According to Central Pollution Control Board (CPCB), particulate size _______ micrometers or less in diameter are responsible for causing the greatest harm to human health.
Neil O'Brien (10 May 1934 –24 June 2016) was a quiz master who was often credited for conducting the first formal well-organised quiz in Calcutta, India.