Choose the plural form of the noun "appendix."OptionsAppendaAppendixesAppendices Appends

Step 1: Identify the Correct Plural Form

To determine the correct plural form of the noun "appendix," we need to consider standard English rules for pluralization, especially with words that end in "ix."

Step 2: Analyze the Options

1. Appenda: This is not a recognized plural form.
2. Appendixes: While this is a valid plural form, it is more commonly used in some contexts.
3. Appendices: This is the traditional and widely accepted plural form of "appendix," particularly when referring to supplementary material in books.
4. Appends: This is a verb form, not a plural noun.

Step 3: Verify and Conclude

Among the offered options, "appendices" is the most appropriate choice for the plural form of "appendix" in academic and formal writing.

Final Answer

The correct plural form of "appendix" is Appendices.