In DeFunis v$.$ Odegaard $(1974),$ the Supreme Court declined to render a decision on this case. The plaintiff Mr$.$ DeFunis was initially denied entry to University of Washington law school and sued on the basis that affirmative action policies had discriminated against him. He was able to attend law school with a provisional admission while the case was pending. By the time SCOTUS had heard the case, DeFunis was going to complete his final term. Does this example illustrate which of the constitutional criteria for determining when the Supreme Court will hear a case?

standing

collusion

mootness

ripeness