Which of these scenarios most puts margaret at risk of identity theft?

Risk of identity theft will be massively increased in these following ways :

- Not using a secure internet connection

Websites often use cookie scrapping to steal information from you. If you don't get a secure internet connection, they might steal your internet behavior or personal identity that you've input when you visit previous websites.

- Downloading application from unknown source

Some identity thief often mask their software in the form of emails attachment or pirated application. When you download it to your computer, it can collect all information from the computer and send it to the thief.

- Blatantly storing your personal information in social media

Sometimes, identity theft occurs not because of some elaborate actions from the thief.  Internet users could be careless and put their information on things such as social media or online forum.

the correct answer is the following is a list of inventions made in the medieval islamic world, especially during the "islamic golden age" (8th to 13th centuries),[1][2] as well as the late medieval period, especially in the emirate of granada and the ottoman empire.

science and technology in the islamic world adopted and preserved knowledge and technologies from contemporary and earlier civilizations, including persia, india, china, and greece-roman antiquity, while making a number of improvements and innovations.