The figure below shows a graph of the scale factor, RU, with time, for three different scenarios.The age of the universe is the difference between now and the time at which RU is zero. Which curve illustrates an accelerating universe? 
Definitions:
Desegregating
The act of eliminating racial segregation, or the separation of different racial groups, in institutions or society.
State Flag
A flag designed to represent and symbolize a specific state within a country, often featuring unique symbols, colors, and designs.
Brown V. Board
A landmark 1954 U.S. Supreme Court case that declared state laws establishing separate public schools for Black and white students to be unconstitutional.
Supreme Court
The highest federal court in the United States, with ultimate appellate jurisdiction over all U.S. federal courts and state court cases involving issues of federal law.
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