The new data 'challenges' many old assumptions. [=the new data gives people reasons to doubt many old assumptions]
He hopes to be the governor's 'challenger' in the next election. [=the candidate running against the governor]
The coach is confident that you will 'rise to the challenge'. [=the coach is confident that you will succeed]
(..) me of how I started out in life. And now, I want to give him the one thing I always wanted. A home. And you're sure you're capable of meeting all the challenges... of raising a human boy? With all due respect, how hard could it be? Very well, then. If a boy can adopt a dog... (..)2014 Mr. Peabody & Sherman
(..) only dogs can hear. Oh, cool. Let that little keepsake be a reminder to you... that no matter what challenges you face, no matter how far away I might seem... Bye, Mr. Peabody! ...I'm with you. Who can tell me who he is? (..)2014 Mr. Peabody & Sherman