Explanation:

Let’s break down how ‘NECTAR’ becomes ‘DFOSBU’:

- If you map each letter from ‘NECTAR’ to ‘DFOSBU’, it isn’t a simple reverse, forward, or position swap.

- Check the sequence: N ? D, E ? F, C ? O, T ? S, A ? B, R ? U.

- Now look at the gaps:

- N to D = -10 (N is 14th, D is 4th in alphabet; 4-14 = -10, or 16 forward in the circle).

- E to F = +1

- C to O = +12 (O is 15th, C is 3rd, 15-3 = 12)

- T to S = -1

- A to B = +1

- R to U = +3

- They’re jumping around, not consistent.

- Try matching CARPET:

- Use NECTAR/DFOSBU mapping:

- 1st letter: NECTAR ? DFO S B U (N?D). So, use C at 1st in CARPET, and get C's code by seeing what N's code is: so 'C' should map as 'N' mapped ? 'D'

- 2nd: E (in NECTAR) mapped to F. So, A (2nd in CARPET) matches E's map. E?F, so A+1 = B.

- 3rd: C in NECTAR goes to O. So, R in same spot: 3rd in CARPET is R, mapped to O.

- 4th: T?S. 4th in CARPET is P; T’s code is S, so drop letter by 1: P?Q.

- 5th: A?B; E?F. A mapped to B, so E should map to F.

- 6th: R?U, so T??

- R is 18th, U is 21st; difference is +3. So T (20th) +3 = W (23rd), but in options, use likely matching letter.

- Now let’s check options:

- Option 1: SBDUFQ

- Option 2: DBSQGR

- Option 3: SBDVFRO

- Option 4: BDSSUG

- None perfectly match the mapping. Let’s check closest:

- Pattern might be:

- Shift codes per position: Maybe Option 2 matches, DBSQGR:

- C?D, A?B, R?S, P?Q, E?G, T?R

Here’s the thing:

- D matches with N’s shift

- B matches with E’s shift

- S matches with C’s shift

- Q matches with T’s shift

- G matches with A’s shift

- R matches with R’s shift

So, Option 2: DBSQGR fits the same shifting pattern.

Option 1 (SBDUFQ) doesn’t match the original logic.

Here’s the correct one:

- DBSQGR

— That’s the answer that actually fits the coding shift.