Symmetric four letter mirror pairs – UGC NET Question

Each group has the first and third letters identical, and the second and fourth letters also identical. The outer letters move forward in order A, B, C, D, while the inner letters move backward from Z to Y to X to W. The next outer letter after D is E, and the next inner letter before W is V, so the next block must be E V E V, that is EVEV.

Option A:
Option A, EVVE, has the correct set of letters but places the V’s together in the middle instead of in the second and fourth positions. This breaks the pattern where the first and third letters are the same and the second and fourth letters are the same. Because it changes the internal symmetry, EVVE does not fit the series.

Option B:
Option B is correct because it keeps the structure where the first and third letters match and the second and fourth letters match. It also advances the outer letters from D to E and moves the inner letters from W to V as required. This exact preservation of both movement and symmetry makes EVEV the logical next term.

Option C:
Option C, EWEW, keeps E at the outer positions but fails to update the inner letters from W to V. That would freeze the backward movement of the inner positions, which contradicts the observed pattern. Therefore EWEW cannot be accepted as the next term.

Option D:
Option D, EVEW, mixes V and W in the inner positions so that the second and fourth letters are no longer identical. The series clearly maintains identical inner letters in every group. As this structural condition is violated, EVEW is not a correct continuation.