I would say that the correct answer is B, concerned. A doesn't apply, he isn't really preoccupied with something over something else, and C doesnt completely make sense with the passage. And Tom isn't horrified, he doesn't seem to be reacting too much at all, other than just seeming concerned.
Answer:what wou-dnthe artifle be about?
Explanation:
<span>Series of words describes lengths of geologic time from longest to shortest is:
</span><span>eons, eras, periods, epochs, ages
Hence, The right option is :
</span><span>A: eon > era > period</span>
