Which of the following series observes the rule, "Skip in between adjacent…

CONCEPT: In an alphabet series governed by an "increasing skip" rule, if the sequence skips 1 letter between the first pair of terms, 2 letters between the second pair, 3 letters between the third pair, and so on, the positional gap (difference in alphabet rank) between consecutive letters must rise by exactly one, step after step. Skipping s letters between two terms means their positional gap is s + 1.

1. The rule starts by skipping 1 letter between the first pair, so for a 6-letter series the five required positional gaps, in order, are 2, 3, 4, 5, 6.

2. Assign alphabet ranks: B = 2, D = 4, G = 7, K = 11, P = 16, V = 22.

3. B to D: gap 4 - 2 = 2, skipping only C - matches the required first gap of 2 (skip of 1 letter).

4. D to G: gap 7 - 4 = 3, skipping E and F - matches the required second gap of 3 (skip of 2 letters).

5. G to K: gap 11 - 7 = 4, skipping H, I and J - matches the required third gap of 4 (skip of 3 letters).

6. K to P: gap 16 - 11 = 5, skipping L, M, N and O - matches the required fourth gap of 5 (skip of 4 letters).

7. P to V: gap 22 - 16 = 6, skipping Q, R, S, T and U - matches the required fifth gap of 6 (skip of 5 letters).

CROSS-CHECK: comparing the positional gap sequence of every lettered option shows only one sustains the increasing pattern through all five gaps without a break.

Since B D G K P V is the only sequence whose gaps rise steadily as 2, 3, 4, 5, 6 across every step, it is the series that satisfies the stated rule.