Answer:
Sunday
Step-by-step explanation:
days of the week are always capitalized because they are proper nouns. Therefore, you should capitalize the days of the week in the following way: Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, and Saturday. Basics Capitalization: The Days of the Week, the Months of the Year, and Holidays (But Not the Seasons Used Generally) Days, months, and holidays are always capitalized as these are proper nouns. Seasons aren’t generally capitalized unless they’re personified.
therefor,
Sunday has to capitalized no matter what cause it is the name of a day of the week
So you correct answer is C) Sunday