Ok so logically it wouldn’t be A or D. B and C are both museums but we don’t know which museum exactly. After doing some research (lol) you can see that the answer was B,the natural history museum.
No te pido dinero. La vendedora nos muestra muchas chaquetas a Laura y a mí. ¿Quíen pagará sus estudios a Manuel? Nosotros pensamos comprar regalos para (a) nuestras madres.