Which of the following actions by moctezuma i indicate that he was an skilled politician?

a) he solidified control over conquered cities by replacing their kings with puppet leaders.
b) he began a series of public works projects, including the building of aqueducts.
c) he increased the number of human sacrifices.
d) he maintained the triple alliance while keeping tenochtitlan dominant.

D) He maintained the Triple Alliance while keeping Tenochtitlan dominant.

Explanation: The Triple Alliance, also known as the Aztec Empire, was an alliance between three regions: Mexico-Tenochtitlan, Texcoco, and Tlacopan, they expanded quickly and conquered other regions in Mesoamerica, where they ruled for almost a hundred years (from 1428 to 1521), Moctezuma I was the leader of this Alliance for a long time, and with it and the dominance of the region of Tenochtitlan, he proved to be an skilled politician.