Answer:
The correct answer is D. French Indochina was made of Vietnam, Laos, and Cambodia.
Step-by-step explanation:
French Indochina was a federation of protectorates in Southeast Asia that was part of the French colonial empire.
Officially, it was known as the Indochina Union, and after 1946 it became the Indochina Federation as part of the French Union. It was formed by a federation of three Vietnamese regions (Cochinchina, Tonkin and Annam) together with the protectorates of Laos and Cambodia.