Question

Which of these advances did Han scientists make? Select all that apply.(1 point)Responsescreated more accurate calendarscreated more accurate calendarsdevised the base-20 number systemdevised the base-20 number systemdeveloped the concept of zerodeveloped the concept of zerocreated a process for the manufacture of paper

Answer 1

Han scientists made the following advances:

- Created more accurate calendars
- Created a process for the manufacture of paper

The other options (devised the base-20 number system and developed the concept of zero) are not associated with Han scientists.