Answer:
The correct answer is Practical Skills.
Explanation:
Brian is a 50 year old person who is unable to manage his work and personal life. He has been struggling for years to strike a balance between these two but his time management skills always came out to be very poor. So in the context of Intellectual Disability, Brian in most likely weak in Practical Skills.
Practical skills are the skills which are used to do some creative work, practical work, household work or anything that adds value to your work. There are a lot of skills that are considered the practical skills in the daily course of routine, like cooking, washing, computer skills, driving, managing time, etc. So Brian is lacking in this skill.