Which of the following is not a skill the authors say managers must have to be successful?
a. technical knowledge
b. creativity
c. human relations skills
d. critical thinking skills

The correct answer is letter "B": creativity.

Explanation:

There are many skills managers must meet to conduct business successfully. Planning, communication, decision-making, delegation, problem-solving, and motivation are the most common. Besides, it is important for high-rank executives to possess technical knowledge, human relations, and critical thinking skills. Creativity is also crucial but not necessary for a manager. It is vital though for the marketing department of an organization.

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