B
父亲忠告儿子不要买二手车.
advise用法：
advise sth.
advise sb.to do sth.（否定形式：advise sb.not to do sth.)
D的形式就不对,如果接that,则视同从句,可是从句里并没有主谓宾啊.而且advise后接从句时,需要用虚拟语气,that...(should) + do sth.,should可以省略掉.比如这句话如用that,后面应该是：
The father advised that his son should not buy a sencond-hand car.
表示建议,命令的动词后接宾语从句时,要用虚拟语气.有类似用法的词：suggest,propose,order,command等.