Answer : C) It summarizes the main topic of the essay
Https://www.povertyactionlab.org/evaluation/impact-eyeglasses-academic-performance-primary-school-st...
The answer is dictionary.
<span>glossary - an alphabetical list of terms or words found in or relating to a specific subject, text, or dialect, with explanations; a brief dictionary.
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a thesaurus lists words in groups of synonyms and related concepts.
it is not an encylopedia
Fifty cents is a plural noun since it is talking about more than one cent. In the example, you would say, "fifty cents <em>is </em>how much I owe you".