Concept:Each letter is assigned its position number in the alphabet (A=1, B=2, etc.). The relationship follows a constant difference between the given pair.Explanation:Find the position of D: D is the 4th letter. H is the 8th letter. The difference is +4.Apply the same step to J. J is the 10th letter. Add 4: 10 + 4 = 14.The 14th letter in the alphabet is N.