单选题 When traveling, it is possible that you may be advised to take the travelers' checks, which provide a secure ______ to carrying your money in cash.

【正确答案】 C
【答案解析】句意：旅行时可能你会被建议带旅行支票，作为现金的安全替代。alternative意为“可供选择的对象 (或道路)；substitute作”替代物，代用品“讲，常与介词for搭配；selection意为”选择，挑选”；preference作“优先，偏爱”讲。因此C为正确选项。