The skill that Harold is showing, according to the given question is organisational skill based on his ability to manage different areas effectively.
According to the given question, Mr. Harold is a principal in an elementary school that is able to analyze strengths and weaknesses of his teachers and motivate them to give them their very best.
He also has the skill of resolving problems that members of his staff and students face.
Therefore, we can say that Harold has an ability to organise things and manage things and people very well.
As a result of all these, Mr. Harold is showing organisational skill
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