HOW WAS THE PUBLIC MOTIVATED TO HELP THE HEALTH WORKERS

53- - DE THI THU DAI HOC MON ANH VA DAP AN
Tiếng Anh DE THI THU DAI HOC MON ANH VA DAP AN
53- How was the public motivated to help the health workers?A- By educating them.B- By rewarding them for reporting smallpox cases.C-By isolating them from others.D- By giving them vaccinations.