Rule out' means-
সঠিক উত্তর
to dismiss from consideration
The phrase ‘sine die means
ব্যাখ্যা: Rule out (phrasal verb)
Meaning: to state that something is not possible or that someone or something is not suitable
Synonym: Exclude, Eliminate, Reject, dismiss, disregard
Antonym: allow, consider
Source: Oxfordlearnersdictinaries.com