Which of the following is the definition of the word prefix?

Options:
An affix added at the beginning of a word root
An affix added to the end of a word root
Word part added at the beginning or end of a word root that changes the words meaning
A basic word part that offend comes from Greek or latin

An affix added at the beginning of a word root

The definition of the word "prefix" is:

- An affix added at the beginning of a word root.

The correct definition of the word prefix is: "An affix added at the beginning of a word root."

To arrive at this answer, we can break down the options and analyze their meanings:

1. "An affix added at the beginning of a word root": This definition accurately describes what a prefix is. A prefix is a word part that is added to the beginning of a word root to modify its meaning.

2. "An affix added to the end of a word root": This definition describes a suffix, not a prefix. A suffix is an affix added at the end of a word root to modify its meaning.

3. "Word part added at the beginning or end of a word root that changes the word's meaning": While this option does mention word parts added to the beginning or end of a word root, it doesn't specifically identify the nature of a prefix. It could encompass both prefixes and suffixes.

4. "A basic word part that often comes from Greek or Latin": This statement refers to the origin of many word parts in the English language, but it doesn't specifically discuss the role or meaning of prefixes.

By analyzing the options and their descriptions, we can conclude that the correct definition of a prefix is "An affix added at the beginning of a word root."