Organization Wide Defaults

Organization Wide Defaults in Our Recruiting App:

To determine the org-wide defaults that we'll need in our Recruiting app, we need to answer
the following questions for each object:
1. Who is the most restricted user of this object?
2. Is there ever going to be an instance of this object that this user shouldn't be allowed
to see?
3. Is there ever going to be an instance of this object that this user shouldn't be allowed
to edit?