Which of the following is a word root?

And affix added to the end of a word root
A word part added at the beginning, or end of a word route that changes the words meaning
An affix added, at the beginning of a word root
A basic word part that often comes from Greek or Latin

A word root is a basic word part that often comes from Greek or Latin.

A word root is a basic word part that often comes from Greek or Latin.

The correct answer is "A basic word part that often comes from Greek or Latin." This is commonly known as a word root.

To identify a word root, look for a basic word part that carries the core meaning of a word and is often derived from Greek or Latin. Word roots serve as the foundation for building words with the addition of prefixes and/or suffixes. They are typically the main identifier of a word's meaning.

In this context, the other options mentioned are related to word structure. An affix added to the end of a word root is called a suffix, while an affix added at the beginning of a word root is called a prefix. Both of these modify the meaning of the word root. Therefore, the correct answer is the option that describes a word root as a basic word part derived from Greek or Latin.