The correct answer is: D. stingy.
A stingy person is not generous with their money or possessions. They are reluctant to spend money or give away things, even to people who need them.
The other options are not as closely related to the word “generous”.
A liberal person is open-minded and tolerant of different opinions. They are often willing to spend money on things that they believe in, such as social programs or the arts.
A spendthrift is someone who spends money carelessly and without thought for the future. They may be in debt or have difficulty making ends meet.
A reckless person is someone who takes risks without considering the consequences. They may be impulsive and act without thinking.