Final answer:
Troops from Australia and New Zealand sustained heavy casualties at Gallipoli during World War I.
Step-by-step explanation:
The correct answer is c) Australia and New Zealand.
Troops from Australia and New Zealand sustained heavy casualties at Gallipoli during World War I. The Gallipoli campaign was a major military campaign fought between the Ottoman Empire and the Allies, primarily British, Australian, and New Zealand forces.
During the assault on the Gallipoli Peninsula, British Imperial troops, including Australian and New Zealand troops, were fiercely opposed by the Turkish defenders and suffered heavy casualties. The battle at Gallipoli holds historical significance for Australia and New Zealand, as it marked the beginning of a sense of national identity for these countries.