This is a test of commonsense with single/multi-choices. Complete the next sentence:

How to prevent typhoid fever when you're traveling
Stick to bottled or boiled water.
Bottle water is more likely to have been purified, treated, and handled safely. If you can't get bottled water, you can boil tap water to kill the germs that cause typhoid fever.

Pick from:
-- What's more, tap water is ideal for laundry and kitchen uses because it can keep your dishes clean. Cut down on the nutritional minerals you consume..
-- Only add tap water to the bottles that you intend to drink. Bottled water is more likely to be safe, especially for those traveling in asia and some coastal regions where typhoid fever often affects people..
-- However, this must be purified at least 3 times a day, as it can become contaminated after 2 hours. If you are traveling in cooler areas, like south-west asia or asia-north america-many of those places will be more likely to have a standing water pump..
-- You should bring water to a full rolling boil for at least one minute. If you have an option, choose carbonated bottled water, since it is even safer than still water..
The answer is:
You should bring water to a full rolling boil for at least one minute. If you have an option, choose carbonated bottled water, since it is even safer than still water.