Answer : 4. "All the above"
Explanation :

Answer: D) All the above Explanation: Some more NPP Acronym stands for  NPP New Patriotic Party NPP Nuclear Power Plant NPP Notice of Privacy Practices NPP Non-Physician Practitioner NPP New Progressive Party NPP National Patriotic Party NPP Notice of Proposed Procurement NPP Neighbourhood Police Post (Singapore) NPP Non-Paged Pool (memory) NPP Nurse Practitioner in Psychiatry.