How do complete Folio j0 : c05 and c11 ?

I give up on trying to figure out those ones. I'm attempting to complete the folios form the dlc and I eventually went to the wiki to try and understand how to do challenges c_05 and c_11 but even with the solution right under my eyes I can't understand how I'm supposed to do it.

For c_05 I don't understand what is the ''on reflection'' they're talking about and for c_11 I don't understand how I'm supposed to see the score challenge. I definitely already did a score above 1231613 but it's still not completed.

Please just explain them to me 😭