I think it a or b but think more a sorry if I am wrong
The best answer would be
<span>Strains of bacteria can become immune to antibiotics that once killed them effectively.
Because evolution is all about how the creature adapts to the environment and how it defends itself from the dangers around it. It can learn how to prevent those terrible things to happen to them that's why the virus is a creepy and good example. </span>
I think it’s B I’m not sure tho
Langues chose, style of writing, and length of writing would be my answers.
tell me if i'm wrong
That event was historically correct.