Question

the prefixes il-, in-, im- and ir- also mean not. when they come at the beginning of a word, the meaning is the opposite of the root word. the prefix in- is used before words with many letters. however, il- comes before words starting with the letter l. the prefix ir- comes before words starting with r. and im- mostly comes before words starting with m and p. which prefix should be added to the word reversible so that it means not reversible? a im- b in- c ir- d il-

Explanation:

To determine the correct prefix for "reversible" to mean "not reversible", we analyze the prefix rules. The root word "reversible" starts with "r". The prefix "ir - " is used before words starting with "r" (as per the given rules: "il - " before "l", "im - " before "m" and "p", "in - " for many letters, and "ir - " before "r"). So the prefix "ir - " should be added to "reversible" to form "irreversible" (meaning "not reversible").

Answer:

C. ir-