Final answer:
The correct answer is option a) Her parents have a strong interest in the destination.
Step-by-step explanation:
In order for Darla to persuade her parents to help pay for a study trip abroad, she should consider several factors. Firstly, it would be more difficult for her to succeed if her parents have a strong interest in the destination because they may be more willing to pay for the trip.
Additionally, presenting a well-thought-out plan would increase her chances of success as it would demonstrate her seriousness and preparation for the trip. Offering to pay for the entire trip herself may actually make it more difficult for her to convince her parents as they may feel that she is capable of financing the trip on her own.
Lastly, if her parents have financial constraints, it may make it harder for them to contribute financially to the trip, which could hinder her chances of success.