Concept:
This is a "one-word substitution" exercise. It requires identifying a single verb that encapsulates a complex descriptive phrase, usually relating to the editing or censorship of literature or media.
Step 1: Understanding the target phrase.
The phrase is "to remove all objectionable matter." This refers to the act of cleaning up a text, film, or piece of information by deleting parts that are considered offensive, vulgar, or inappropriate for the audience.
Step 2: Analyzing the options.
• Appendix: This is an addition to the end of a book (the opposite of removing something).
• Authorise: This means to give formal permission for something (unrelated to removal).
• Liberal: This is an adjective describing a person's open-mindedness or a generous amount; it is not an action.
Step 3: Defining the correct term.
The verb "expurgate" literally means to remove matter thought to be objectionable or unsuitable from a book or account. It is often used in the context of censorship. For instance, "the censored edition was heavily expurgated."
Final Answer: Option A