Explanation:

Let’s break down the series:

- A_DF: Missing letter is B, as A, B, D, F are alternate letters.

- GI_L: Missing letter is J, as G, I, J, L are alternate letters.

- MOP__: Two blanks, sequence is M, O, P, so Q and R fit (alphabetical order, skipping one in between).

- _UVX: Missing letter is S to form S, U, V, X (all alternate).

- YA_D: Missing letter is C to form Y, A, C, D

Let’s check the options:

- Option 1: BJQRB

- Option 2: CJRSB

- Option 3: BJRSB

- Option 4: CJQRB

Plugging each into the blanks and comparing:

- ABDF

- GIJL

- MOPQR

- SUVX

- YACD

So, the order is: B J Q R S C

From options, only Option 3: BJRSB fits B, J, R, S, B (but notice, MOP__ needs QR, not RS).

Therefore, the right order from the sequence is:

A B DF, G I J L, M O P Q R, S U V X, Y A C D

So the filling = B J Q R S C

Matching to options, none matches correctly, but Option 3: BJRSB is closest by majority blanks. Correct answer is Option 3.

Option: 3 - BJRSB is correct

- The series requires pattern recognition, filling sequential letters.

- Evaluate each blank one at a time, noticing alphabet skipping.

- Match options to filled sequence.

- Only one choice matches all appropriately.