Question

notice! travellers intending to embark on the atlantic voyage are reminded that a state of war exists between germany and her allies and great britain and her allies; that the zone of war includes the waters adjacent to the british isles; that, in accordance with formal notice given by the imperial german government, vessels flying the flag of great britain, or any of her allies, are liable to destruction in those waters and that travellers sailing in the war zone on the ships of great britain or her allies do so at their own risk. —imperial german embassy, washington, dc, april 22, 1915 what is the greatest risk germany took by establishing this policy? wasting its energy chasing down passenger ships harming innocent people and making new enemies angering the british by denying them war supplies failing to prevent delivery of supplies by other routes

Explanation:

The policy is Germany's unrestricted submarine warfare (U-boat policy) in 1915, targeting British and allied vessels. The greatest risk was harming innocent civilians (like on passenger ships, e.g., Lusitania) and provoking new enemies (like the US, which later joined the war). Option 1: Chasing passenger ships isn't the main risk. Option 3: Denying war supplies to Britain was a goal, but angering Britain wasn't the greatest risk. Option 4: Failing to stop supplies via other routes is a secondary concern. The key risk was harming innocents and making new enemies.

Answer:

harming innocent people and making new enemies