Question

show what you know- how to stay safe online reading questions
when using a public wifi network its a good idea to
quickly change your passwords
enable two factor authentication
only check your social networks, not email or banking
limit your activity to browsing websites

Explanation:

Two - factor authentication adds an extra layer of security. Changing passwords quickly isn't a proactive safety measure for public Wi - Fi. Checking only social networks and limiting to website browsing don't fully protect sensitive information.

Answer:

enable two factor authentication