Final answer:
Police and military personnel are not allowed to vote in E) Peru as this is mandated by the country's constitution to maintain their neutrality and separation from political processes.
Step-by-step explanation:
The country where police and military are not allowed to vote is Peru.
In Peru, the constitution restricts some members of the military and national police from voting to ensure their neutrality and non-participation in political affairs. This is seen as a way to maintain a clear separation between the state's defense forces and political processes.