Geo-cultural culture is a social science that explores the cultural characteristics and development laws of geographical areas from local geography, environmental relationships and the social, cultural differences and causes associated with them. According to the above definitions, which of the following is geophysical research objects? ['Huishang phenomenon.', 'The development process of an agricultural landscape in a certain place.', 'Urban house price skyrocketing.', 'Entrepreneurship of college students in a city.']