Given below are four statements each with two blanks. Select the option which correctly fills up...

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Given below are four statements each with two blanks. Select the option which correctly fills up the blank in any two statements.
(i) Bhopal gas disaster took place on 1984 and this day is now observed as the day in India to make the anniversary of the Bhopal gas disaster.
(ii) is a non-biodegradable pollutant.
(iii) When pollutants are released from a single point it is called pollution, but when it is over a large area, then it is called pollution.
(iv) ___ is the world's most problematic aquatic weed, introduced in India for its lovely flowers, also called as
(a) (i) December 5, National pollution prevention (iv) Parthenium, terror of Bengal
(b) (i) December 2, Bhopal gas tragedy (ii) DDT, sewage
(c) (ii) Sewage, DDT (iii) point source, non-point source
(d) (iii) line source, fixed source (iv) Eichhornia, tiger of Bengal
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