The correct answer is D. Washington Irving’s stories can best be categorized as romantic gothic literature.
Washington Irving was an American writer of Romanticism. Under the pseudonym Diedrich Knickerbocker, in 1809 he published a parodic heroic poem, History of New York. In 1815 he traveled to England, where, among other things, he published The Sketch Book of Geoffrey Crayon, Ghent (1820), which contained stories such as Rip Van Winkle and The Legend of Sleepy Hollow.
Irving stayed in Europe for seventeen years. From 1826 to 1829 he worked for the US Embassy in Madrid. During his time in Spain he also traveled extensively around the country and wrote several stories about his travels, including visiting the Moorish castle of Alhambra in Andalusia, he wrote the book Tales of Alhambra about his experiences of the place. The book was a great success and made the castle a popular tourist destination. In 1832 he returned in triumph to New York, when he was the first American author to become famous even in Europe. He traveled around the southern and western United States and wrote travel stories. From 1842 to 1845, Irving was the United States ambassador to Spain.