Analyzing the Coding Pattern

The question presents a coding puzzle based on letter transformations. We need to identify the consistent rule applied to the given examples:

• IMHO = JNIP
• IDK = JEL
• SO = TP

Let's examine the relationship between the letters in each pair.

Identifying the Letter Shift Rule

By comparing the letters in the input words and their corresponding coded words, we observe a consistent pattern:

• IMHO to JNIP: Each letter is shifted one position forward in the alphabet (I+1=J, M+1=N, H+1=I, O+1=P).
• IDK to JEL: This example also follows the rule (I+1=J, D+1=E, K+1=L).
• SO to TP: This confirms the pattern (S+1=T, O+1=P).

The rule is a simple alphabetical shift where each letter is replaced by the next letter in the sequence (a consistent $+1$ shift).

Applying the Pattern to Find IDC

Now, we apply the established $+1$ letter shift rule to the target word IDC:

• The first letter is I. Shifting it one position forward gives J (I + 1 = J).
• The second letter is D. Shifting it one position forward gives E (D + 1 = E).
• The third letter is C. Shifting it one position forward gives D (C + 1 = D).

Combining these results, we find that IDC transforms into JED.