Determine whether the given word is a prefix, suffix, or root word.

A. ist
B. uni
C. arch
D. auto
E. ive

A. ist - suffix

B. uni - prefix
C. arch - root word
D. auto - prefix
E. ive - suffix

To determine whether the given word is a prefix, suffix, or root word, we can analyze the word structure and its common usage in different words.

A. ist: This word is typically used as a suffix and denotes a practitioner or supporter of a specific belief or field. For example, "dentist" or "optimist" both contain the suffix "ist." Therefore, "ist" is a suffix.

B. uni: This word is commonly used as a prefix, meaning "one" or "having one." For instance, "unicycle" or "unilateral." Therefore, "uni" is a prefix.

C. arch: This word can be both a root word and a suffix. As a root word, it means "chief" or "ruler," as seen in words like "architect" or "archbishop." As a suffix, it denotes a position or a rank, as in "monarch" or "oligarch." Therefore, "arch" can be a root word or a suffix depending on its usage.

D. auto: This word is usually used as a prefix, meaning "self" or "automatic." Examples include "automobile" or "autonomous." Therefore, "auto" is a prefix.

E. ive: This word is typically used as a suffix, indicating "having the quality of" or "tending to." For instance, "active" or "creative" both use the suffix "ive." Therefore, "ive" is a suffix.

In summary,
A. "ist": suffix
B. "uni": prefix
C. "arch": root word or suffix
D. "auto": prefix
E. "ive": suffix

To determine whether a given word is a prefix, suffix, or root word, we need to understand the meanings and functions of each.

1. Prefix: A prefix is a word part that is added before a base word to change its meaning or create a new word. For example, in the word "unhappy," "un-" is the prefix, which means "not" and changes the meaning of the base word "happy."

2. Suffix: A suffix is a word part that is added after a base word to change its meaning or create a new word. For example, in the word "helpful," "-ful" is the suffix, which means "full of" or "having the quality of."

3. Root word: A root word is a base word that carries the core meaning of a word. It is the part of the word that remains when prefixes and suffixes are removed. For example, in the word "bookstore," the root word is "book."

Now, let's analyze the given words:

A. "ist": This word does not function as a prefix or a suffix. It is a root word that refers to a person who practices or specializes in a particular field. For example, "dentist," "artist."

B. "uni": This word is a prefix that means "one" or "single." It is often used to indicate something that is singular, unique, or unified. For example, "unicycle," "unicorn."

C. "arch": This word can function as both a prefix and a root word. As a prefix, "arch-" is used to denote something that is primary, chief, or topmost. As a root word, "arch" refers to a ruler or governing authority. For example, "architect," "monarch."

D. "auto": This word is a prefix that means "self" or "automatic." It is commonly used to indicate something that is automated or related to oneself. For example, "autonomous," "autopilot."

E. "ive": This word is a suffix that means "tending to" or "having the quality of." It is commonly used to convert a noun or verb into an adjective. For example, "talkative," "creative."

In summary,
A. "ist" is a root word.
B. "uni" is a prefix.
C. "arch" can function as both a prefix and a root word.
D. "auto" is a prefix.
E. "ive" is a suffix.