Explanation:

- Break down the word BACKGROUND into indexed letters: B, A, C, K, G, R, O, U, N, D.

- Look for pairs where the distance between letters in the word equals their distance in the alphabet:

1. B(2) and C(3) ? 1 letter apart in both the word and alphabet.

2. C(3) and G(7) ? 3 letters apart in both the word and alphabet.

3. G(7) and N(14) ? 6 letters apart in both the word and alphabet.

- Answer option “Two” correctly states the number of such pairs.

- Option 3: Two