The correct Active/Passive form of the given sentence is:

☀ Promises should not be broken.

So, the correct passive form is: "Promises should not be broken."

The other options and their explanations:

☀ Promises should be broken.

• This option is in the passive voice, but it conveys the opposite meaning of the original sentence. The original sentence advises not to break promises, while this option suggests that promises should be broken.

☀ Promises should not be broke.

• This option is not grammatically correct. The correct past participle form of "break" is "broken," not "broke."

☀ You should not be breaking the promises.

• This option is in the active voice, not the passive voice. It uses "you" as the subject, which is not the intended passive construction. The correct passive form should use "promises" as the subject, as in the correct option mentioned earlier.