Which term best fits a formal public announcement issued by an authority?

• A. Campaign
• B. Union
• C. Ironclad
• D. Proclamation

Answer: (D)

The main idea here is identifying a word that means a formal official public notice issued by an authority. A proclamation is exactly that: an official statement issued by a government or leader to announce laws, decisions, or important notices to the public, carrying formal authority.

A campaign is a planned effort with a goal, like winning an election or promoting an idea, not a formal declaration. A union is a group formed for collective action or the act of joining together. Ironclad describes something very firm or guaranteed, or literally a type of strong battleship, and it does not denote a public announcement.

So, a proclamation best fits the idea of a formal public announcement issued by an authority.