Question

in 1802, the french people voted to keep napoleon in power, giving him the right to
serve for fifty years.
choose his successor.
share supreme power with the pope.
choose his replacement as first consul.

Explanation:

In 1802, the French people's vote regarding Napoleon gave him the right to choose his replacement as First Consul. The other options are incorrect: serving for fifty years is not accurate, he didn't get the right to choose a successor in the general imperial - succession - like sense here, and sharing power with the Pope was not the result of this vote.

Answer:

D. choose his replacement as First Consul.