Final answer:
Robert Katz identified technical skills as the least important for top managers, as their roles require a stronger emphasis on conceptual and human skills.
Step-by-step explanation:
According to Robert Katz, the managerial skills LEAST important to a top manager are technical skills. Katz believed that as managers rise through the ranks, their need for technical skills diminishes in comparison to their need for conceptual and human skills. Top managers need to understand the whole organization and create strategies which are primarily based on conceptual skills. They must also work through people, which requires strong human skills. However, it's not that technical skills are not needed at all, but rather that they become less critical as a manager progresses to a higher level in the organization.