Final answer:
In MLA format, the correct way to present the date is 'Day Month Year' without commas, thus 2)'May 15' is correct.
Step-by-step explanation:
The correct way to format the date in MLA format is Day Month Year without commas. Therefore, the correct option is 2) May 15. An example of this in a header of an MLA formatted essay would look like this:
Studentfirstname Studentlastname
Professor Firstname Lastname
Class Title (i.e. English 110)
15 May 2018
When writing the works-cited entry, if you are including an access date for an online resource, you should list it in the format: "Accessed Day Month Year." For example:
"Accessed 4 Apr. 2020."
If a publication date is needed, follow the format of "Day Month Year," abbreviating only the months with more than four letters, as per MLA guidelines.