In the word ‘AMBIDEXTROUS’, if the first letter is interchanged with the last letter, the second letter is interchanged with the eleventh letter, the third letter is interchanged with the tenth letter and so on, then which letter would immediately follow R in the new arrangement when read from left to right?

​Word: AMBIDEXTROUS (12 letters)

Swapping as per given instruction:
1↔12, 2↔11, 3↔10, 4↔9, 5↔8, 6↔7

New word after swapping:
S U O R T X E D I B M A

Find the letter after R (4th position) → Next is T

Thus, correct option is (d).