Detailed Instructions: In this task, you're given a question, a context passage, and four options which are terms from the passage. After reading a passage, you will get a brief understanding of the terms. Your job is to determine by searching and reading further information of which term you can answer the question. Indicate your choice as 'a', 'b', 'c', or 'd'. If you think more than one option is plausible, choose the more probable option to help you answer the question.
Q: Question: Who ruled the country that annexed Warmia in 1772? Passage:By the First Partition of Poland in 1772, Warmia was annexed by the Kingdom of Prussia; the properties of the Archbishopric of Warmia were secularized by the Prussian state. In 1773 Warmia was merged with the surrounding areas into the newly established province of East Prussia. Ignacy Krasicki, the last prince-bishop of Warmia as well as Enlightenment Polish poet, friend of Frederick the Great (whom he did not give homage as his new king), was nominated to the Archbishopric of Gnesen (Gniezno) in 1795. After the last partition of Poland and during his tenure as Archbishop of Poland and Prussian subject he was ordered by Pope Pius VI to teach his Catholic Poles to 'stay obedient, faithful, and loving to their new kings', Papal brief of 1795. The Prussian census in 1772 showed a total population of 96,547, including an urban population of 24,612 in 12 towns. 17,749 houses were listed and the biggest city was Braunsberg (Braniewo).
Links: a. Frederick the Great b. Kingdom of Prussia c. Kingdom of Prussia d. Gniezno
A:
b