The correct answer is C indeed. You should always use pointing words. If you don't your paragraphs might be incoherent and may lack cohesiveness.
She should get an overall idea of what she's planning for the day - but of course, don't have it set in stone because of all the unexpected tasks. Karen should leave space in between each thing on her schedule just so she can better prepare.
OR another thing she can do is plan hour by hour just so she doesn't have to keep rearranging her schedule! (:
I hope all is well, and you pass! good luck, rockstar! (:
