PLS HELP ASAP!!! WILL GIVE BRAINLIEST!!!
Which of the following sentences is best written? (5 points)

a
My favorite day of the year is July 24 my birthday.

b
My favorite day, of the year, is July 24 my birthday.

c
My favorite day of the year is July 24th—my birthday.

d
My favorite day of the year is (July 24) my birthday.