Concept:The case involves the abuse of marijuana and alcoholic beverages, so the agency that fights drug abuse and enforces drug laws is most suitable.
Explanation:Wanja openly says he takes marijuana and alcoholic beverages at a night club.
The National Drug Law Enforcement Agency (NDLEA) is responsible for controlling the use, trafficking, and abuse of hard drugs in Nigeria.
The NDLEA can arrest drug users, seize illegal substances, and also counsel and rehabilitate drug addicts.
NEMA deals with disaster management, NAFDAC regulates food and drugs, and NOA handles public orientation.
None of these other agencies directly enforces drug laws on individuals like Wanja.
Therefore, the government agency most capable of controlling Wanja and his group is the NDLEA.
Answer:D. National Drug Law Enforcement Agency (NDLEA)