Genetics
-A punnet square works to know the possible genotypes of the offspring of two parentals with a known genotype.
-A pedigree chart works when there is information available about the genotypes of some of the individuals that compose a family tree, which can be helpful in deducing the genotype of a specific individual.
-A test cross works in the following way: the individual with the unknown genotype is crossed with a recessive individual, and based on the offspring phenotype, the genotype of the parent that was unknown is deduced (It works when working with mendelian genetic traits).
Therefore, the correct answer to this question is the option "All of the above".