What was the purpose of the notice from the imperial german embassy?

The notice was issued by the Imperial Germany Embassy to ask the tourers and the trippers to change their routes of voyage.

Explanation:

After the outbreak of World War I, the waters adjoining Great Britain were no longer safe for travelling. This notice was issued following the incident of the sinking of a ship named Lusitania by a submarine there. Keeping in view the safety of their citizens and other civilians, the Imperial Germany Embassy issued a notice that served more like a warning asking the travellers to stop using the waters neighboring Great Britain.

Iwould say d. eye contact and body language because you aren’t using any spoken communication. hope this : )