Answer:
creating a custom template
Step-by-step explanation:
If Sarah can't find a template for her advertising business, her best option is to create a custom template as it will allow her to have something adapted specially fo her needs and that would be unique. Also, it will avoid the problems of using something that was created by someone else and it can save her time because she can do it quickly instead of spending more time looking for a template that probably won't adjust 100% to her needs.