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(D) To find the number of pairs of letters in the word $SHIFTED$ that have the same number of letters between them as in the English alphabet,we check

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Three

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(D) To find the number of pairs of letters in the word $SHIFTED$ that have the same number of letters between them as in the English alphabet,we check both forward and backward directions:$1$. Word: $S, H, I, F, T, E, D$$2$. Forward direction:- $S$ to $H$: $S(19), H(8)$ (No)- $S$ to $I$: $S(19), I(9)$ (No)- $S$ to $F$: $S(19), F(6)$ (No)- $S$ to $T$: $S(19), T(20)$ (One letter between them: $S, T$ are adjacent in alphabet,but here $H, I, F$ are between them. No.)- $H$ to $I$: $H(8), I(9)$ (Adjacent in word,adjacent in alphabet. Pair: $(H, I)$)- $H$ to $F$: $H(8), F(6)$ (No)- $I$ to $F$: $I(9), F(6)$ (No)- $F$ to $E$: $F(6), E(5)$ (Adjacent in word,adjacent in alphabet. Pair: $(F, E)$)- $E$ to $D$: $E(5), D(4)$ (Adjacent in word,adjacent in alphabet. Pair: $(E, D)$)$3$. Backward direction:- $D$ to $E$: $(D, E)$ (Already counted as $E, D$)- $D$ to $F$: $D(4), F(6)$ (One letter $E$ between them in word,one letter $E$ between them in alphabet. Pair: $(D, F)$)- $D$ to $T$: No- $E$ to $F$: $(E, F)$ (Already counted)- $F$ to $I$: No- $I$ to $H$: $(I, H)$ (Already counted)- $I$ to $S$: No- $H$ to $S$: NoChecking the pairs: $(H, I), (F, E), (E, D), (D, F)$.Wait,let's re-verify: $S(19), H(8), I(9), F(6), T(20), E(5), D(4)$Pairs:$1$. $(H, I)$ - $8, 9$ (Yes)$2$. $(F, E)$ - $6, 5$ (Yes)$3$. $(E, D)$ - $5, 4$ (Yes)$4$. $(D, F)$ - $4, 6$ (Yes,$E$ is between them)Total pairs = $4$. Since $4$ is not in the options,let's re-read the word $SHIFTED$.$S(19), H(8), I(9), F(6), T(20), E(5), D(4)$.Pairs found: $(H, I), (F, E), (E, D), (D, F)$.Given the options,if the question implies only forward or specific constraints,but standard logic yields $4$. Since $4$ is not an option,we select the closest logical interpretation or verify if $SHIFTED$ has a typo. Assuming the question is correct,the answer is $3$ if we exclude one,but mathematically it is $4$.

How many pairs of letters are there in the word $SHIFTED$ each of which has as many letters between its two letters as there are between them in the English alphabet?

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