"Which solution is the easiest?"

Translation: Które rozwiązanie jest najłatwiejsze?

[Glabisia]

Shouldn't "najprostsze" be also correct?

[gabe81]

Yes, it should.

[chartsman]

najprostszy = the simplest

if we stick to details

I agree that both should be accepted, though.

[JerryMcCarthy99]

Does Polish make the same distinction as English, in that if there were to be only two solutions to choose from, then the comparative "łatwiejsze" would be used?