Respuesta :
Answer: c) at a house in Switzerland.
Explanation: In the given passage from the introduction to Frankenstein by Mary Shelley we can see a description of the place where the events took place (the events that led her to write Frankenstein), she says that she was visiting Switzerland, and spend hours on the lake or on its shores, but then, because of the rainy and wet weather, they spend days in the house, so the correct answer is option C: at a house in Switzerland.