Which prefix changes the meaning of bacterial from "relating to or caused by bacteria" to "preventing bacteria"?

a. over-

b. anti-

c. auto-

d. extra-

The prefix that changes the meaning of bacterial from "relating to or caused by bacteria" to "preventing bacteria" is anti-

The prefix anti means “against,” “opposite of,” “antiparticle of,” used in the formation of compound words ( anticline ); used freely in combination with elements of any origin ( antibody; antifreeze; antiknock; antilepton ).

Prefixes are letters which added to the beginning of a word in order to make a new word with a different meaning. Prefixes can, for instance, create a new word opposite in meaning to the word the prefix is attached to.

answer: to inform

explanation: the red death is an exciting passage, but also in some ways scary, so it is not to amuse. the red death is far in the past, so it is not to warn.

you shopuld find your answers here if you need more. the answer is the infinite variety of human nature