The correct answer is B. My appointment is scheduled for Monday, July 4.
Step-by-step explanation:
According to grammatical rules in English, it is necessary to capitalize proper nouns, this in terms of dates includes months, days of the week and even certain celebrations. For example, words as May, September, Saturday or Christmas are always capitalized. This implies in the sentence presented both "Monday" and "July" should be capitalized.T herefore, the sentence that is written correctly is "My appointment is scheduled for Monday, July 4".