Which is evidence that sparta had elements of democracy a) the kings has absolute power

They were rulers of early Sparta and distributed power with the two Spartan kings. They were a committee of five elected yearly who testified "on behalf of the city", while the kings testified for themselves. They held various responsibilities including legislative, judicial, financial, and executive duties.  

the answer is a) to be able to obey them.

it was the "4. potsdam" conference that demanded the unconditional surrender of japan, since it was clear that the japanese would continue to find until the very last man otherwise.