Explanation:

Let’s break down the sequence: _ m _ l n _ m l m n k _ k _ n l

Let’s see what fits in those blanks using the options:

Option 1: l, n, k, l, n

- Placing these: l m n l n k m l m n k l k n l

- Watch the pattern—this creates some repetition but also some mismatches (like the double n’s).

Option 2: k, n, k, l, m

- Placing these: k m n l n k m l m n k l k m n l

- There’s something off—put your finger on the sequence and it falls out of order.

Option 3: k, l, k, l, m

- Placing these: k m l l n k m l m n k l k m n l

- Too many l’s back-to-back—breaks the flow.

Option 4: m, n, k, l, m

- Placing these: m m n l n k m l m n k l k m n l

- Look closely—there’s a nice symmetry here. Each “mlmnkkl” chunk almost repeats.

Option 4 is the only one that maintains a consistent and logical sequence.

What this really means is: Option 4, m, n, k, l, m, completes the pattern smoothly and logically where others stumble. Sometimes the right choice just clicks into place—and here, it's option 4.