The position of how many letters will remain unchanged if each of the letters in the word SOUNDBAR is arranged in alphabetical order?

The correct option is One.

Let's analyze the given word SOUNDBAR and arrange its letters in alphabetical order to see which letters remain in their original positions.

Original word:

1st letter: S
2nd letter: O
3rd letter: U
4th letter: N
5th letter: D
6th letter: B
7th letter: A
8th letter: R

Now, let's arrange the letters of SOUNDBAR in alphabetical order:

The letters are: A, B, D, N, O, R, S, U

Comparing the positions:

Position 1: S → A (Changed)
Position 2: O → B (Changed)
Position 3: U → D (Changed)
Position 4: N → N (Unchanged)
Position 5: D → O (Changed)
Position 6: B → R (Changed)
Position 7: A → S (Changed)
Position 8: R → U (Changed)

Only the letter 'N' at the 4th position remains unchanged after sorting the letters in alphabetical order.

Therefore, the position of only One letter remains unchanged.