Answer:
A. Close proximity among Australia, New Zealand, and Britain allowed for easy communication and negotiation.
Step-by-step explanation:
Considering the claim stated in the question, hence, among the following options, the statement that could be used as evidence in support of the claim that "Australia and New Zealand were more successful than other British colonies in gaining independence." is option A "Close proximity among Australia, New Zealand, and Britain allowed for easy communication and negotiation."
This is because a CLOSE PROXIMITY between Great Britain, Australia, and New Zealand means these countries or colonies have a good rapport with Great Britain. Therefore, it was easier to negotiate their independence instead of going to war (for example USA) or series of agitation and protest to get their independence (for example India)