Views can include website data collected before the view was created.
The correct answer is:
A reporting view is the level in an Analytics account where you can access reports and analysis tools. Analytics automatically creates one unfiltered view for every property in your account, but you can set up multiple views on a single property. Any data you send to an Analytics property automatically appears in all views associated with that property.
Read more here: https://support.google.com/analytics/answer/2649553