Which figure is empowered to offer advice, warnings, and encouragement regarding governmental matters?

Okay, so the question is about who can offer advice, warnings, and encouragement regarding governmental matters. This points to the Queen. While the UK is a parliamentary democracy where elected officials run the government, the monarch still has an important constitutional role. This role includes the right to be consulted, to encourage, and to warn the government. This doesn't mean the Queen dictates policy – that's the job of Parliament and the Prime Minister. Instead, it's a tradition where the Prime Minister meets with the Queen regularly to keep her informed, and she can then offer her perspective based on her long experience and knowledge of history. It's a subtle but significant influence. The police enforce the law, the Speaker presides over Parliament, and the Prime Minister leads the government, but it's the Queen who holds this unique advisory position, a role that has evolved over centuries of British history.
The Queen's role is to advise, warn, and encourage, a royal duty.