Select the option that represents the letters that, when placed from left to right in the following blanks, will complete the letter-series.

C L _ V E C _ _ W E C L O _ _ C _ O _ E

The correct answer is O L O X E L Y.

Let's begin by placing the answer letters into the blanks from left to right and reading the full sequence:

Original blanks: C L _ V E   C _ _ W E   C L O _ _   C _ O _ E

Filling in O, L, O, X, E, L, Y respectively:

C L O V E  |  C L O W E  |  C L O X E  |  C L O Y E

This gives us four complete groups:

Group 1: C L O V E
Group 2: C L O W E
Group 3: C L O X E
Group 4: C L O Y E

Identifying the Pattern:

Each group follows the fixed frame C – L ��� O – ? – E, where only the 4th letter changes across groups:

V → W → X → Y

These are consecutive letters of the alphabet, each advancing by +1:

V (+1) = W  |  W (+1) = X  |  X (+1) = Y

This confirms the repeating pattern is perfectly consistent. The blanks must be filled with O L O X E L Y, matching Option 4.