52. What is the term for the word part placed before a word to change its meaning?
Answer: A
Prefix
A prefix is the word part placed before a word to modify its meaning, making it the correct choice in this context.
A) Prefix
This option is correct because a prefix is specifically defined as a morpheme added to the beginning of a word to change its meaning. Examples include "un-" in "undo" and "pre-" in "preview," both of which alter the original words.
B) Affix
While an affix refers to a morpheme that can be added to a word, it encompasses both prefixes and suffixes. This makes it a broader term and not specifically the correct answer to the question which asks for the word part placed before a word.
C) Suffix
A suffix is a morpheme added at the end of a word, which does not fit the definition provided in the question. Since the question specifically asks for a term that is placed before a word, suffix is therefore incorrect.
D) Vocab
Vocab, short for vocabulary, refers to the set of words known or used by a person or group. It does not pertain to word parts that modify meaning, making it irrelevant in this context.
Conclusion
The term "prefix" is definitively correct as it specifically refers to the addition of a morpheme at the beginning of a word to change its meaning. All other options either describe different types of morphemes or are unrelated to the structure of words as defined in the question.