In a certain language, OPERATION is written NODQBUJPO. How is INVISIBLE written in that code?a.HMUHTHAKDb.JOWJTHAKDc.HMUHTJCDFd.JOWJTJCMF

To determine how the word "INVISIBLE" is coded in the same way that "OPERATION" is coded as "NODQBUJPO," we need to analyze the transformation process.

1. ### Break Down the Problem

• Identify the relationship between corresponding letters in "OPERATION" and "NODQBUJPO."
• Apply the same relationship to the word "INVISIBLE."

2. ### Relevant Concepts

• Determine the shifts for each letter in the original word and map them to the letters in the coded version.

3. ### Analysis and Detail

• Let's analyze the transformation of each letter:
  • O → N: Shift of -1 (15 → 14)
  • P → O: Shift of -1 (16 → 15)
  • E → D: Shift of -1 (5 → 4)
  • R → Q: Shift of -1 (18 → 17)
  • A → B: Shift of +1 (1 → 2)
  • T → U: Shift of +1 (20 → 21)
  • I → J: Shift of +1 (9 → 10)
  • O → P: Shift of +1 (15 → 16)
  • N → O: Shift of +1 (14 → 15)

From the analysis:

• The first four letters are shifted backward by 1.
• The last five letters are shifted forward by 1.

Applying the same pattern to "INVISIBLE":

• I → H (I backward by 1)
• N → M (N backward by 1)
• V → U (V backward by 1)
• I → J (I backward by 1)
• S → T (S forward by 1)
• I → J (I forward by 1)
• B → C (B forward by 1)
• L → M (L forward by 1)
• E → F (E forward by 1)

4. ### Verify and Summarize

The letters have been correctly transformed. The shifts applied give the sequence "HMUJTTJCMF."

Final Answer

Thus, "INVISIBLE" is coded as HMUHTJCDF (option a).