Concept: The word "ambition" means a strong wish or inner drive to achieve something.Explanation: In this sentence, her ambition is to own a private jet, which shows a deep personal goal or longing.Among the options, "desire" is the closest in meaning to ambition.A target is a specific aim, a joy is happiness, and a plan is a detailed method, but none of these capture ambition as strongly as desire does.Answer: D. desire