Final answer:
The assault on Point du Hoc was conducted by the 2nd Ranger Battalion, and the two countries that sustained heavy casualties at Gallipoli were Australia and New Zealand.
Step-by-step explanation:
The assault on Point du Hoc during World War II was not conducted by any of the companies listed in the student's options (Company A and Company C, Company B and Company D, Company X and Company Y, Company M and Company N). Instead, the assault on Point du Hoc was famously conducted by the United States Army Ranger Assault Group, specifically units from the 2nd Ranger Battalion. Their objective was to disable a German artillery battery that threatened the Allied landing forces on Omaha and Utah beaches during the Normandy invasion on D-Day, June 6, 1944. The rangers scaled the 100-foot (30 m) cliffs under enemy fire and, after reaching the top, discovered that the guns had already been moved. Nevertheless, they fought off several counterattacks and held their position until relieved.
The question concerning which two countries sustained heavy casualties at Gallipoli, the correct answer is c. Australia and New Zealand. The Gallipoli Campaign, also known as the Dardanelles Campaign, took place between April 25, 1915, and January 9, 1916. Troops of the Australian and New Zealand Army Corps (ANZAC) suffered significant casualties as they fought alongside British and French soldiers against the Ottoman Empire, who were allied with Germany and Austria-Hungary during World War I.