Addtion of adjuvants in vaccines: 1. increase toxigenicity
2. decrease toxigenicity
3. increase antigenicity
4. Decrease antigenicity​

An adjuvant is an ingredient used in some vaccines that helps create a stronger immune response in people receiving the vaccine. In other words, adjuvants help vaccines work better.

d.

hope to be marked brainliest

b exhibiting favoritism toward the kikuyu people.