A tsunami is caused by an underwater earthquake, and therefore relates to plate tectonics.
Answer:
I would use a thermometer on it.
Explanation:

<em><u>One of the best ways to determine if a tree or any plant is dead is the tree scratch test. Just beneath the dry, outer layer of bark in a tree's trunk lies the cambium layer of bark. In a living tree, this is green; in a dead tree, it is brown and dry</u></em>
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B)
seems to be the most legit