What is the minimum log level needed to see user-generated debug statements?

Given the code block: Integer x; For(x=0;x<10; x+=2) { If(x==8) break; If(x==10) break; } System.debug(x); Which value will the system debug statement display?

A developer wants to mark each Account in a List<Account> as either or Inactive based on the LastModified field value being more than 90 days.
Which Apex technique should the developer use?

When can a developer use a custom Visualforce page in a Force.com application? (Choose 2)

Which two platform features align to the Controller portion of MVC architecture? (Choose two.)