D, the key word there is unsure which is a synonym for undecided. Hope this helps
Answer:
In its response to the ultimatum, Serbia surprisingly agreed to most of the demands, only refusing to accept a direct investigation by Austro-Hungarian police officers on its territory. Kaiser Wilhelm II of Germany received a copy of the Serbian reply on 28 July 1914.
By 1775, tensions between the American<span> colonies and the British government approached the breaking point, especially in Massachusetts, where Patriot leaders formed a shadow </span>revolutionary<span> government and trained militias to prepare for armed conflict with the British troops occupying Boston.</span>
