Question

what is one of the first things you should do if your browser is behaving strangely?
check your internet connection
clear your browsers cache
install a new antivirus program
delete all your bookmarks
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Explanation:

When a browser behaves strangely, clearing the cache is a common first - step. The cache stores temporary data. Over time, corrupted or outdated cache files can cause browser glitches. Checking the internet connection is more relevant for issues like inability to load pages (but not the most common first - step for general strange behavior). Installing a new antivirus is an over - reaction unless there's a specific security concern. Deleting bookmarks has no relation to browser functionality.

Answer:

Clear your browser's cache