Concept:The idiom "Speak your mind" means to express your thoughts, opinions, or feelings openly and honestly without hesitation.
Explanation:The phrase "Speak your mind" means to say exactly what you think, without holding back.
For example, "Don’t be afraid to speak your mind during the meeting; your opinions are valuable."
Option A, "Express frankly", matches this meaning — it describes being direct and honest about your thoughts.
Option B, "Stay silent", is the opposite of speaking openly.
Option C, "Lie", means to say something untrue, which is not the same as speaking your mind.
Option D, "Gossip", means talking about others' private matters, often in a negative way.
Therefore, the correct choice is the one that matches the idiom's clear meaning.
Answer:Option A: Express frankly