The correct answer is - C) mass animal deaths.
The Deadliest Tsunami in the human history caused a lot of problems and lot of damage. Thousands of people died, even more homes were destroyed. The water was polluted, and there was a lack of food. Diseases started to spread around. The coastal regions were totally destroyed. One thing that was noticed were mass animal deaths. The animals do have much better senses that we do, so they can feel when something that big and devastating is coming, so most of them managed to get to safer ground, and only small number of animal bodies were found dead.