Like many forms of substance abuse, alcoholism develops through stages. which of the following stages is the most advanced and the most difficult to recover from?

The addiction stage. You repeatedly drink and experience the numbing and loss of control effect on your emotions and if you lead a depressing life you crave that effect and you will become seriously addicted. Some recovering addicts cannot be around alcohol because they might have a relapse into that addiction. 

Well, l think that some effective communication is, emotional barriers and lack of attention, interest distraction or irrelevance. also some physical disabilities such as hearing problems or speech difficulties.      l hope i am correct  and you good luck.