Question

1. you should also be careful about opening emails from people you dont know or clicking on, or files, that you dont recognize. pictures attachments emails buttons

Explanation:

When receiving emails from unknown sources, attachments (along with files) can carry malware or viruses. Pictures are less likely to be a direct threat in this context compared to attachments. Emails themselves are what you receive, not something you click on in the same sense as attachments or files. Buttons are not typically associated with the main risk - factor described here.

Answer:

B. attachments