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

Solution : Given:
1. Piquant   2. Pierce   3. Patent   4. Perjury   5. Pasture

Step 1: The first letter of each word is the same, so move on to the next letter.
Step 2: The second letter of each word is: i , i , a , e , a . Based on the alphabetical order of these letters, we can arrange them: P a tent, P a sture, P e rjury, P i quant, P i erce.
Step 3: Compare the third letter of (Pa t ent, Pa s ture), and (Pi q uant, Pi e rce). Pasture will come before Patent in the sequence as s comes before t in the alphabetical system. Similarly, Pierce will come before Piquant as e comes before q in the alphabetical system.

So, the sequence is Pasture, Patent, Perjury, Pierce, Piquant, or 53421. Hence, the first option is correct.