The correct answer is B) Austria began to see Prussia as a greater threat than France.
Austria shifted alliances in the mid-1700s because Austria began to see Prussia as a greater threat than France.
After the first Treaty of Versailles, Austria reviewed his foreign policy and realized that Prussia was a greater threat than France. So in 1756, Austria made an alliance with France after many years of having the British as its allies. Previously, Austria had lost some territory in war, so it preferred to change its foreign policies in order to protect its interest in further conflicts.
