The use of keywords provides better results than a controlled vocabulary search when searching for the full text or citation records is being done. Thus, option B is the correct option.
<h3>What is vocabulary?</h3>
Vocabulary can be defined as the word or collection of words that a person reads, which helps them to understand the sentence or even to communicate with one another.
A vocabulary search may provide various results when searching for a particular word. But when we use the keyword then that search would provide us with various documents that are related to it like statistical data analysis or full text or even some sort of citation record. Therefore option B is the correct option
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The question isi incomplete, the complete question will be
a. finding standardized hierarchical lists that represent major subject concepts
b. searching full text or citation records
c. searching for a particular subject
d. searching for exact matches
