The correct choice is (a) Pseudomonas melophthora
Explanation: Pseudomonas melophthora is known to degrade carbaryl most efficiently and thereby degrading it to several metabolites, decreasing their toxicity and harm to the environment. Lindane can be degraded by Sphingomonas paucimobilis. Whereas, E. coli, P. putida, Bacillus sp. are bacteria that help in degradation Aldicarb insecticide.