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

Solution : Given:

1. Method 2. Methanol 3. Metrics 4. Metro 5. Melody

Step 1: The first two letters of each word are the same.
Step 2: The third letter of each word is either t or l . Based on the alphabetical order of these letters the sequence is – Melody, (Method, Methanol, Metrics, Metro)
Step 3: Compare the fourth letter of (Met h od, Met h anol, Met r ics, Met r o). (Method, Methanol) will come before (Metrics, Metro) as h comes before r in the alphabetical system.
Step 4: Compare the fifth letter of (Meth o d, Meth a nol) and (Metr i cs, Metr o ). Methanol will come before Method in the sequence as a comes before o in the alphabetical system. Similarly, Metrics will come before Metro in the sequence as i comes before o in the alphabetical system.

So, the sequence is Melody, Methanol, Method, Metrics, Metro, or 5, 2, 1, 3, 4. Hence, the first option is correct.