The War of Austrian Succession was known in North America as King George's War. The correct option in regards to all the options given in the question is option "C".
This was the war that involved
most of the European powers and was fought between the years 1740 to 1748. This
war ended with the signing of the Treaty of Aix-La- Chapelle in the year 1748.
With the signing of this treaty, Theresa became the Archduchess of Austria and
the Queen of the country Hungary.