Synonyms are the words or phrases that have the same meaning with other words. They may not have the same words or sounds but their meanings are the same. For eg, big and large are synonymous with each other.
Likewise, the synonym for the word 'prominence' will be 'important' as prominence also means 'utmost importance' or the highest of importance. Thus, the correct answer for the best synonym for "prominence" will be "importance".
