【正确答案】 C

【答案解析】[解析] 推理题。文章第一段指出：In most cases it is mainly friends and relations of both families who are invited but when the bride's father is a businessman of some kind． the wedding reception may provide a useful occasion for establishing social connections with clients or customers who has the job of sending out the formal printed invitation cards．大意是：大多数情况下婚礼喜宴邀请的都是新郎新娘双方的亲戚朋友，但是如果新娘的父亲是一位商业人士的话，那么婚礼招待会可能为他在生意上和客户建立业务联系提供一个契机。而本题所说的some guests就是指这些客户，而这些客户也就是能带来生意上的利益的人，所以答案选C。