What is the proper grammatical spelling of this word ?

Question

Is the correct spelling public relations or public relations' in the following sentence ( I am not sure because as soon as you have the word "of" you have a possessive which requires the apostrophe). - "Visual effects complaints, on the other hand, are generally a public relations’ issue.""

Answer 1

lose the apostrophe and it is grammatically correct.

Answer 2

I agree with Chicago Q

Answer 3

it's with the apostrophe.