The correct answer is D.
The battle of the Somme , also known as the Somme Offensive was one of the largest and bloodiest battles of world war I.
It was fought between July 1 and November 1 1916 near the Somme River in France. By the time the battle ended, the British suffered 420,000 casualties, the French 195,000 and the Germans 650,000, with the allies having advanced only 8 km (5 miles) .
Only in the sense of relieving the French at Verdun can the British have claimed any measure of success.
