Correct Answer: 12543

Solution : Given:
1. Rangle 2. Regal 3. Royal 4. Room 5. Rested

Step 1: Compare the first letter of each word. Since all the words start with the same letter R , then move to the next letter.
Step 2: The second letter of each word is – a, e, o, o, e. Based on the alphabetical order of these letters, we can arrange them – R a ngle, R e gal, R e sted, R o yal, R o om.
Step 3: Compare the third letter of (Re g al, Re s ted) and (Ro y al, Ro o m). Re g al will come before Re s ted in the sequence as g comes before s in the alphabetical system. Similarly, Ro o m will come before Ro y al in the sequence as o comes before y in the alphabetical system.

The sequence will be Rangle, Regal, Rested, Room, Royal, or 12543. Hence the third option is correct.