B,many foreigners are
"许多外国人对中国文化及风俗感兴趣",应是一种客观现象, 而不是只在过去才感兴趣, 因此要用一般现在时, 另: 宾从中要用陈述句语序. 引导宾从的that 不充当句子成分,可以省略.综上所述,答案应为B.
(注: 原题中的interesting应改为interested . be interested in sth. 对.感兴趣)
Jim has told us many foreigners are interested in the Chinese culture and customs.