【正确答案】 B

【答案解析】[解析] 在probability，certainty，likelihood，evidence等词后可以跟同位语从句，一般由that引导，例如：Can you produce any evidence that he was not at home that night?你能提供证据说明那天晚上他不在家吗?当这些词作主语且谓语又比较短时，通常将该主语与其同位语从句分开，例如：The order soon came that all civilians should evacuate the village．不久命令下来了，所有居民都必须撤出村子。由此可见B为正确答案。