Answer:
C. the emphasis on the beauty of nature
Step-by-step explanation:
The book "Rip Van Winkle" by Washington Irving is about a man named Rip Van Winkle and the mysterious 'sleep' he had of which he discovered that two decades had gone by. He discovered America had gained independence from Great Britain during that time.
The trait typical of the romantic era was the beauty of nature which was described using description about the mountains, specifically the Catskill Mountains and the nearby villages.