In a semi-strong-form efficient market, security prices fully reflect all publicly known and available information, which aligns with the given scenario.

• Option A (Weak-form efficient): Incorrect because weak-form efficiency only reflects past market data, not all publicly available information.
• Option C (Strong-form efficient): Incorrect because strong-form efficiency includes both public and private information, which exceeds the given condition.

This question contrasts the three forms of market efficiency: weak-form, semi-strong-form, and strong-form.