add a comma or semicolon if needed. otherwise, submit the text without any additional punctuation. you can…

Brief Explanations:

The two parts of the sentence "You can wear button - down shirts tucked in for a formal look" and "or unbuttoned with a tank top underneath for a more casual style" are independent clauses joined by the coordinating conjunction "or". A comma is needed before "or" to separate the two alternative ways of wearing button - down shirts.

Answer:

You can wear button - down shirts tucked in for a formal look, or unbuttoned with a tank top underneath for a more casual style.