The answer to the question is A
The server should be able to block unauthorized access, a good firewall but still, enable those authorized to have an access. However, there should be security on vulnerable parts of the system that may lead to corruption and easy access to data thieves.
The subject line should be a brief message explaining some of the contents of the email.
U can see the printscr botton at the top right of ur keyboard and then u can type paint and the control v.