<h2>Right answer:</h2><h3>b. use a variety of letters, numbers and characters</h3>
Since you want to create passwords for secure accounts, you must create this password using 8 characters or more. So you can use any combination of letters, numbers, and symbols (that is called <em>ASCII characters</em>). It isn't recommended that you use something like this password1234
. Moreover, never use personal information or the same password for all accounts. It's easy to be hacked.