Final answer:
Regularly updating antivirus software is a good security practice for web browsing; other important measures include using strong passwords and safeguarding personal information.
Step-by-step explanation:
The good security practice for web browsing is d) Regularly updating antivirus software. It is important to keep the antivirus software up to date because it helps protect your computer from new threats that emerge on a daily basis. It is not safe to share passwords, disable firewalls, or click on unknown links, as these actions can pose significant security risks. Instead, you should take measures such as protecting your credit and debit cards, securing your mailbox, ensuring your wallet is secure, using strong passwords and PINs, using antivirus software, and notifying your bank of any changes to your contact information to maintain good security practices while browsing the web and handling personal information.