Step-by-step explanation:

I honestly believe its D but I'm not for sure. Sorry if i didn't help much
We can compare the two units or object performances by that.... even in the case of magnitude lower than zero....
Remember the order of operations and do what is in parenthses first.
Take 9 to its power first, then add 2. Once you get that, take that answer to the 83721 power.
I would give you the answer, but my calculator is saying invalid input every time I am trying to use such high exponents. Sorry :( But I hope that this helps