This is a test of commonsense with single/multi-choices. Complete the next sentence:

How to prevent students from cheating
Don't allow access to test materials.
It is important to keep test materials secure before a test. This includes making sure that all copies and the original are accounted for after copying.

Pick from:
i. Don't leave important documents or ideas out in the open. Always be sure that any students and faculty members in your class have the right to access the tests..
ii. Some students may try to access test questions before a test, even if that means they have to break into your classroom or office to get them. To prevent this, never leave your keys hanging in the door and don't give them to a trusted student for any reason..
iii. Make sure that you don't lock your class door or give a password to anyone who enters your classroom. Exam-deadlines are an important reason to prohibit classroom access..
iv. This way, students may find it hard to duplicate material from the test. If you want to make sure that students, you should try to keep the material in a separate folder that is easily accessible to all students..
The answer is:
ii.