Answer:
D) The size of its navy
Step-by-step explanation:
The Britain empire was really proud of its navy and it showed its power through it, from exploring the world, to colonize other parts of the world, the British Navy was at one point in history the largest navy on the world and it expanded its colonies all throught the world, in Asia, Africa, Ocenia and America, the commonwealth was the biggest empire and it was powered by the largest navy in the world.