Answer:
The sentence in which the appositive or appositive phrase is essential to the sentence and punctuated correctly is A) The title, the result of much hard work, was one of many Ashe would win.
Step-by-step explanation:
An appositive phrase gives extra information about a noun, it could be defining or describing the preceding noun, it could be essential or not and it is framed between commas, the sentence "The title, the result of much hard work, was one of many Ashe would win." has the appositive phrase "the result of much hard work" which is defining the noun The title.