To throw down the glove

The idiom "to throw down the glove" from medieval dueling means to issue a challenge often for confrontation making "to give a challenge" correct. Option A suggests unethical actions C implies surrender and D is unrelated. This expression is used in modern English for bold challenges like in debates or competitions. Recognizing such idioms enhances understanding of figurative language in speeches texts or professional scenarios. It adds depth to communication especially when describing challenges or confrontations in various contexts.