Similarly, he told couples to seek marital counseling ( )if they're having trouble communicating.
同样,他告诉夫妻们,如果他们的沟通遇到了麻烦,可以提前去寻求婚姻咨询。A 选项,处在……边缘;B 选项,在……边缘;C 选项,尤其,特别;D 选项,提前提早。所以 D 项是正确答案。