Input: 93 box 27 pink 46 green 18
Step 1: box 93 27 pink 46 green 18
Step 2: box 93 green 27 pink 46 18
Step 3: box 93 green 46 27 pink 18
Step 4: box 93 green 46 pink 27 18
What will be Step 5?

Given
Input sequence: 93 box 27 pink 46 green 18

 Step 1: Swap 1st two elements
→ box 93 27 pink 46 green 18 (First alphabetically smallest word "box" is placed first)
 Step 2: Bring last word forward
→ box 93 green 27 pink 46 18 (Next smallest word "green" is placed after it)
Step 3: Bring next last number forward
→ box 93 green 46 27 pink 18 (Next largest number "46" is placed in descending order)
Step 4: Bring next last word forward
→ box 93 green 46 pink 27 18

The pattern alternates: word (alphabetical) → number (descending).

Step 5: Bring next last number forward
→ box 93 green 46 pink 18 27

So, After arranging according to the alternating sequence of words and numbers, Step 5 becomes:
box 93 green 46 pink 18 27
Thus, the correct option is: (b)