The correct option is B Dihybrid cross
The law of independent assortment applies only to factor or genes
present on different pairs or distantly on the same chromosome or pairs
of homologous chromosomes. The principle or law of independent
assortment can be studied by means of dihybrid cross, e.g., between pure
breeding pea plants having yellow round seeds (YYRR) and pure breeding
pea plants having green wrinkled seeds (yyrr). So, the correct answer is 'Dihybrid'.