A. Test cross- The cross of an organism showing dominant phenotype with the recessive parent to predict the genotype of the test organism. B. Dihybrid cross- A cross which considers two pairs of contrasting characters. C. Monohybrid cross- A cross which considers only one pair of contrasting characters. D. Back cross- The cross of hybrids of F1 generation with either one of the parents.So, the correct answer is 'Test cross'.