Consider the commas in bold, which are used to separate the items in a list. If they are not used correctly, remove them or replace them with different punctuation marks.

Barbara Walters's fifty-year career included stints as a writer and on-air reporter for "The Today Show", as co-anchor of the "ABC Evening News", as co-host and producer of "2020," a TV newsmagazine, and as a creator and co-host of "The View," a daytime program.