Correct Answer - Option 2 : INVERTEBRATE
EXPLANATION:
Here first we will count the number of letters in the word ITNIETAM which is 8. Now we will make 2 groups of 4 letters each and that will be ITNI and ETAM.
In the next step, we will reverse the letters of both the group.
ITNI → INTI
ETAM → MATE
Now our result is INTIMATE.
Similarly, with TREVNIETARBI we will count the number of letters and that will be 12.
TREVNI → INVERT
ETARBE → EBRATE
The required result is INVERTEBRATE