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

Solution : Given:
1. Stone 2. Song 3. Sport 4. Singer 5. Strong

Step 1: Compare the first letter of each word. Since all the words start with the same letter S , move to the next letter.
Step 2: The second letters of the words are t, o, p, i, and t respectively in the given order. Based on the alphabetical order of these letters, we can arrange them – S i nger, S o ng, S p ort, S t one, S t rong.
Step 3: Compare the third letter of (St o ne, St r ong). Stone will come before Strong in the sequence as o comes before r in alphabetical order.

So, the sequence will be Singer, Song, Sport, Stone, Strong, or 4, 2, 3, 1, 5. Hence, the second option is correct.