The correct option is D disgusted
The hotel room was so dirty that I was 'disgusted' and complained to the manager.
It is quite clear that the auxiliary verb 'was' has been used. So, the following main verb has to be in the past participle form. The term' disgusted' means to be frustrated, irritated or angry. So, in this case option B is correct and the other options are not because they do not provide the correct answer.