Read the following context and choose the best option to answer the question.
Context: With proper trip insurance , the burden of your illness plus the cutting short of your trip would somehow be lessened by the benefits you can receive from being covered . This is the main reason why you ca n't put a price on peace of mind when traveling . Choose from top companies that offer various features and make sure that you will only get what you need for your trip insurance .
Question: What may be the reason people would go on a trip if they 're sick ?
Options: 
- They did n't know they were sick .
 - They are used to be being sick .
 - None of the above choices .
 - They ca n't get a refund .


They ca n't get a refund .