Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to take an autistic child on vacation [title] Know your child. [step] Autistic children thrive on a routine and predictability. A vacation is a break from routine, which can be upsetting and confusing, especially if your child is in an unfamiliar place.

Ending1: You can help them adjust to their new schedule by providing an initial dose of schedule food, such as ginger ale, or a cold-water bottle. [substeps] For the first day of vacation, having an initial dose of schedule food or water can help them adjust well to the new space. Ending2: When you travel, make sure your schedule is flexible enough for them to find their way home safely. [substeps] Make sure your child spends the day and night in bed, not on the computer or with toys. Ending3: Therefore, have in mind activities that you know your child will enjoy. If your child enjoys the thrill of amusement parks, then that may be your best option. Ending4: They may also feel pressure to travel and are suddenly exposed to new and undesirable accommodations. [substeps] If you tell your child that you will take their vacation vacation, this will be a great opportunity to tell them that you would rather explore more exciting things with them.

Answer format: ending1/ending2/ending3/ending4