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

Solution : Given:
1. Manager 2. Mandatory 3. Manuscript 4. Mammoth 5. Marvel

Step 1: Compare the first and second letters of each word. Since all the words start with the same letter M and are followed by a , then move on to the next letter.
Step 2: The third letter of each word is m , n , or r . Based on the alphabetical order of these letters, we can arrange them –  Ma m moth, Ma n ager, Ma n datory, Ma n uscript,  Ma r vel
Step 3: Compare the fourth letter of (Man a ger, Man d atory, Man u script). Based on the alphabetical order of these letters, we can arrange them – Man a ger, Man d atory, Man u script

So, the sequence is Mammoth, Manager, Mandatory, Manuscript,  Marvel, or 4, 1, 2, 3, 5. Hence, the third option is correct.