Final answer:
Kelly should change her password because it should be unique, used only once, and not easily guessed. Regular changes can also improve security. These steps, along with using anti-virus software and protecting sensitive information, can help safeguard her personal data.
Step-by-step explanation:
Kelly should change her password from "P4ssw0rd" for several important reasons:
Passwords should be used only once for different accounts to minimize the damage if one account is compromised.
Passwords should be changed regularly to reduce the window of opportunity for someone to use a stolen password.
Using passwords and PINs that cannot be easily guessed is essential to protect your wallet and accounts. Also, anti-virus software helps protect your computer from malware that could steal passwords. It's important to protect your credit and debit cards, mailbox, and to notify your bank of changes in your information to secure your personal data.