What type of punctuation is necessary to set apart nonessential appositive phrases?

Read this sentence from the story of my life by helen keller. the most important day i remember in all my life is the one on which my teacher, anne mansfield sullivan, came to me. which element of plot does this sentence best represent?

Select the correct sentence. a. i feel well about starting my new classes this semester. b. despite her inexperience, helen did surprisingly well in the gymnastic competition. c. justin has a great sense of humor and can tell a joke really good. d. that tie looks well with your shirt.

Which revision, if any, best fixes the bolded (capitalized in this case) part of the sentence? female cardinals, a somewhat drab bird compared to the males, blend in well with their environment. no change somewhat drab birds a somewhat drab's bird somewhat drab bird's