Mutations in certain genes of bacteria cause them to be resistant to powerful antibiotics. what type of mutation is this for the bacteria? a. beneficial b. harmful c. neutral d. both beneficial and harmful

A.  beneficial

Explanation:

If we talk about bacteria, they cause infections in the body therefore we use antibiotics to kill them and prevent infections. If there is a certain bacteria that a bacteria gains which makes it resistant against powerful antibiotics, it means that this mutation is great for bacteria but not very good for human beings or any organism against whose disease it was created.

Therefore, as far as bacteria is concerned there is no harm for him and is only good. So, option A is best option.

Hope it help!