Which of the law explains the ratio obtained by crossing Rr × Rr?

The Law of segregation is the law that explains the ratio obtained by crossing Rr × Rr.
The law of segregation states that each individual that is a diploid has a pair of alleles for a particular trait.
Each parent passes an allele at random to their offspring resulting in a diploid organism. The allele that contains the dominant trait determines the phenotype of the offspring.