单项选择题

Questions 14 to 16 are based on the following passage. At the end of the passage, you will be given 15 seconds to answer the questions.
Now, listen to the passage.
According to the professor, what does the term "landscaping" refer to

A.Eliminating the original vegetation from the building site.
B.Making the houses in an area similar to one another.
C.Deciding where a house will be built.
D.Surrounding a building with wildflowers and plants.