Which of these technological advances has improved flu vaccines a-ct scans b-cell-based culturing c-egg production d-glucose monitors

B- cell-based culturing

A cell-based flu vaccine was produced as an option to the egg-based production method. Cell culture technology is probably extra manageable than the conventional technology, which relies upon enough accumulation of eggs. Further, the cell-based flu vaccine that utilises cell-based competitor vaccine viruses (CVVs) has the potential to grant enough assurance than old, egg-based flu vaccines as a consequence of being further related to flu infections in a rotation.

not really sure sorry just trying to get points

answer a scar develops;