Correct Answer: 5, 2, 4, 3,1

Solution : Given:
1. Situation 2. Silver 3. Sitter 4. Simple 5. Signal

Step 1: Compare the first, and second letter of each word. Since all the words have the same letter S and i , move on to the next letter.
Step 2: The third letter of each word is g , l , t , or m . Based on the alphabetical order of these letters, we can arrange them – Si g nal, Si l ver, Si m ple, Si t ter, Si t uation.
Step 3: Compare the fourth letter of (Sit t er, Sit u ation). Sit u ation will come before Sit t er in the sequence as u comes before t in the alphabetical system.

So, the sequence is Signal, Sitter, Situation, Silver, Simple, or 5, 3,1, 2, 4. Hence, the third option is correct.