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.

Question: How old was Friedrich III's daughter when she married Count Palatine Stephan? Passage:The mediaeval historical development that Homberg experienced closely matches that experienced by neighbouring villages such as Kirrweiler, Deimberg, Buborn, Langweiler and Hausweiler. Like these places, Homberg belonged until 1140 to the Nahegau, and then thereafter until 1263 to the Waldgraviate, which itself had arisen from the Nahegau. As far as is now known, Homberg had its first documentary mention in 1319. In the document in question, an arbitrator confirmed that Waldgrave Friedrich of Kyrburg had to forgo all his claims to rights to Hoenberg and a series of other places in the "Gericht auf der Hohe" ("Court on the Heights"). The Gericht auf der Hohe was said to be a constituent district of the "Hochgericht auf der Heide" ("High Court on the Heath"), which comprised, roughly, lands in a triangle bounded by the Nahe, the Glan and the Steinalp (another river). The 1319 document dealt with a dispute between the two Waldgravial sidelines of Kyrburg and Dhaun-Grumbach. About 1344, in his own documents, the name "Friedrich von Hoenberg" appeared. He was obviously a nobleman who came from Homberg, but nothing else about him has come to light. The villages under the Gericht auf der Hohe, among which was Homberg, were pledged first, in 1363, by Johann von Dhaun to Sponheim-Starkenburg and then in 1443 by Waldgrave and Rhinegrave Friedrich to the last of the Counts of Veldenz, namely Friedrich III, whose daughter Anna married King Ruprecht's son Count Palatine Stephan. The document whereby this arrangement was laid out referred to the village's inhabitants as the "poor people of Grumbach". By uniting his own Palatine holdings with the now otherwise heirless County of Veldenz his wife had inherited the county upon her father Friedrich III's death in 1444, but not his comital title and by redeeming the hitherto pledged County of Zweibrucken, Stephan founded a new County Palatine, as whose comital residence he chose the town of Zweibrucken: the County Palatine later Duchy of Palatinate-Zweibrucken. Thus, Homberg, and the other villages, too, lay within this duchy, but they were all returned to the Waldgraviate in 1477 when the pledge was redeemed.
Links: a. Deimberg b. Anna of Veldenz, Countess Palatine of Simmern-Zweibrucken c. County of Sponheim d. Deimberg
b