According to the opposite alphabetical positions of the letters: If we find out opposite letters of each given letter of ANIMAL, A → Z, N → M, I → R, M → N, A → Z, L → O So, the decoded word is ZMRNZO. Similarly, we find out opposite letters of each given letter of PLANTS, P → K, L → O, A → Z, N → M, T → G, S → H
So, the decode word is KOZMGH. Hence, KOZMGH is the correct answer.