Correct Answer: Cumbersome

Solution : Given:
1. Curtains 2. Cumbersome 3. Curious 4. Cucumber

Step 1: Compare the first and second letters of each word. Since all the words start with the same letter C and are followed by u , then move on to the next letter.
Step 2: The third letter of each word is either c , m , or r . Based on the alphabetical order of these letters, we can arrange them – Cu c umber, Cu m bersome, Cu r tains, Cu r ious
Step 3: Compare the fourth letter of (Cur t ains, Cur i ous). Cur i ous will come before Cur t ains in the sequence as i comes before t in the alphabetical system.
So, the sequence is Cucumber, Cumbersome, Curious, Curtains.

Therefore, Cumbersome will appear in the second position. Hence, the second option is correct.