Final answer:
The Linzer item filled with jam is a Tart. The story of the croissant, another pastry mentioned, is related to the siege of Vienna and has historical significance.
Step-by-step explanation:
The Linzer tart is a small one filled with jam, making the correct answer to the question B) Tart. As for the creation of the croissant, this pastry has a legend involving the siege of Vienna where, according to one story, bakers at work early in the morning heard the sounds of Ottoman tunneling and alerted the city, contributing to the defense of Vienna. The croissant, with its crescent shape, is said to celebrate the victory over the Ottomans, invoking a symbol found on the Ottoman flags.