<span>A. olympics i believe
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Answer: An amount, as of goods, services, or money, considered to be a fair and suitable equivalent for something else; a fair price or return.
n. Monetary or material worth.
n. Worth in usefulness or importance to the possessor; utility or merit.
source :word link
Explanation:
this is the accurate definition for value
If the size of star is bigger it produces more brightness,because inside it reactions take place.bigger the size more the brightness.