While Lucas was shopping online, a new window opened to show similar products from a different store. Which of the following practices will prevent unauthorized access to his system when browsing the internet? Enable pop-up blockers. Install antivirus software. Protect passwords. Use spam filters.

this does not make any sense.. i you can reword that i can maybe you

answeroperating system;

the today function returns a valid value without any arguments.

the today function returns the current date based on the computer's date setting and formatted as a date. today takes no parameters, but requires that you use empty parentheses