Read the following case study carefully and then answer the question:

You are the HRD Manager of URD Productions. During the annual performance management process, you evaluate one of your staff, John Bayliss$$s$,$ who had exceeded most performance standards, although he did experience some problems in the workplace, due to being blind. Objects like trolleys were left in the hallway or at training venues and his lunch that he kept in the office fridge, was taken by someone else. Although he believes that this was not done maliciously, it did have a negative influence on his relationship with his colleagues. It was decided to offer a team building to the whole of the HRD Department to develop relationships in the department.

The CEO of URD Productions also informed you that after completing the performance evaluation of all departmental heads or managers, it was clear that they need conflict training as well as change management training. As the company was strongly unionised, he wanted to avoid unnecessary conflict that can lead to Industrial action. This will also provide you with an opportunity to convince the CEO and the executive management team of URD Productions that management development is essential to address the conflict and change management training needs of managers.

What type of disability does John suffer from? A $...$

sensory impairment

mobility impairment

intellectual impairment

emotional impairment