What does "negate" imply?

The term "negate" means to nullify, invalidate, or make something ineffective. In this context, the correct choice indicates that to negate something is to destroy its validity, effectively rendering it meaningless or untrue. This aligns with common usage, where negation in logic or rhetoric involves disproving or contradicting a statement or argument, suggesting that it cannot stand as true.

When considering the other options, they all suggest actions that confer strength, value, or acceptance, which directly contradicts the essence of negation. Strengthening an argument, adding value to a discussion, or promoting acceptance of an idea all imply an enhancement or support, whereas negation involves undermining or invalidating rather than supporting or elevating any concept. Thus, option B accurately captures the essence of what "negate" implies.