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

Solution : Given:
1. Multitude 2. Multinational 3. Multiplier 4. Multinominal 5. Multilingual

Step 1: Compare the first letter of each word. Since all the words start with the same letter M , then move on to the next letter.
Step 2: The second, third, fourth, and fifth letters of each word are the same, i.e., u , l , t , and i , so move on to the next letter.
Step 3: Compare the sixth letter of (Multi t ude, Multi n ational, Multi p lier, Multi n ominal, Multi l ingual). Multilingual will come first as l comes before n , p , and t in alphabetical order. Similarly, (Multinational, Multinominal) will come before Multiplier and Multitude as n comes before p and t in alphabetical order. Also, Multiplier will come before Multitude as p comes before t in alphabetical order. These words can be arranged as – Multi l ingual, Multi n ational, Multi n ominal, Multi p lier, Multi t ude.
Step 4: Compare the seventh letter of (Multin a tional, Multin o minal). Multinational will come before Multinominal as a comes before o in the alphabetical order.

So, the sequence is Multilingual, Multinational, Multinominal, Multiplier, Multitude, or 5, 2, 4, 3, 1. Hence, the first option is correct.