Final answer:
The statement is an example of C) sarcasm, which is often the opposite of what is meant and used to mock or show contempt. It is related to discriminatory housing market manipulation tactics like blockbusting and white flight.
Step-by-step explanation:
The phrase “I hear they're moving in. There goes the neighborhood! Better put your house on the market before values drop!” is an example of sarcasm. Sarcasm often involves making a statement that is the opposite of what is meant, typically to mock or convey contempt. Here, the statement suggests a negative judgment and possibly a prejudiced attitude towards the newcomers, hinting that their arrival will decrease property values, which is a sentiment related to discriminatory practices like blockbusting and white flight. These practices involve manipulating housing markets based on racial prejudices and fears, resulting in lowered home values in certain areas and exploiting both the original and new homeowners for financial gain.
The statement does not fall under the categories of a compliment, encouragement, or praise, as none of these terms accurately describe the mocking and potentially prejudiced tone of the sentiment expressed.