在C中,如果有that,那么that应该做什么成分?that stands nearly a hundred feet high这句从句不仅仅缺了主语而且宾语也同样没有,nearly a hundred feet high ,并不能够算作宾语的成分,所以这句话里绝对不可能是一个that从句
而D中,这句话可以这样改写：The larger of there two buildings stands …
选C的话句子根本无法改写成正常语序