Correct Answer: 3, 1, 4, 5, 2

Solution : Given:
1. Cosmip 2. Costume 3. Cosment 4. Cosmopolitan 5. Cost

Step 1: Compare the first, second, and third letters of each word. Since all the words start with the same letter C and are followed by o, s then move on to the next letter.
Step 2: The fourth letter of each word is either m or t. Based on the alphabetical order of these letters, we can arrange them – Cos m ip, Cos m ent, Cos m opolitan, Cos t ume, Cos t .
Step 3: Compare the fifth letter of (Cosm i p, Cosm e nt, Cosm o politan) and the fifth letter of (Cost u me, Cost). Cosm e nt will come before Cosm i p, and Cosm o politan comes after Cosm i p in the sequence as e comes before i and o in the alphabetical system. Similarly, Cost will come before Cost u me, Cost has only four letters and Cost u me has five letters.

So, the sequence is Cosment, Cosmin, Cosmopolitan, Cost, Costume or 3, 1, 4, 5, 2. Hence, the second option is correct.