The correct option is (d) Mucor sp.
Explanation: Mucor sp. is a particular type of fungi that can degrade Aldicarb insecticide, E. coli, P. putida, Bacillus sp. are bacteria that help in degradation Aldicarb insecticide. Biological methods are usually the best method to degrade xenobiotic compounds or any type of insecticide. The microorganisms used can degrade all the pollutants efficiently and don’t cause any harm to the environment.