The suffix -tomy indicates action; which option is correct?

• A. Incise
• B. To cut
• C. Cutting
• D. Tomy

Answer: (B)

The suffix -tomy denotes cutting or making an incision—the action of cutting into a part of the body. It comes from tom- meaning to cut, with a suffix that turns it into the noun form for the procedure or act. So the option that best reflects that meaning is the verb form "to cut," since it directly expresses the action behind the suffix. While “incise” and “cutting” relate to the act of cutting, they don’t capture the idea of the suffix itself as the designated action, and “tomy” is the suffix rather than the action it denotes.