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

Solution : Given:
1. Flight 2. Fly 3. Fan 4. Finance 5. Fighter

Step 1: Compare the first letter of each word. Since all the words start with the same letter F , then move on to the next letter.
Step 2: The second letters are l, l, a, i, and i . Based on the alphabetical order the sequence will be – F a n, F i nance, F i ghter, F l y, F l ight.
Step 3: Compare the third letters of (Fi n ance, Fi g hter). Fi g hter will come before Fi n ance in the sequence as g comes before n in the alphabetical system.
Step 4: Compare the third letters of (Fl i ght, Fl y ). Fl i ght will come before Fl y in the sequence as i comes before y in the alphabetical system.

So, the sequence is – Fan, Fighter, Finance, Flight, Fly or 3, 5, 4, 1, 2. Hence, the first option is correct.