The correct answer is C. motivating.

Motivating is the managerial function of guiding, overseeing and leading people. It involves creating a work environment that encourages employees to be productive and reach their full potential. This can be done by setting clear goals, providing feedback, and recognizing and rewarding employees for their accomplishments.

Planning is the process of setting goals and developing strategies to achieve those goals. It involves identifying the resources that will be needed, as well as the steps that need to be taken to complete the task.

Directing is the process of giving instructions and overseeing the work of others. It involves setting deadlines, providing feedback, and taking corrective action when necessary.

Coordinating is the process of ensuring that all the different parts of an organization work together effectively. It involves communicating with employees, resolving conflicts, and making sure that everyone is on the same page.

In conclusion, the managerial function of guiding, overseeing and leading people is motivating. This involves creating a work environment that encourages employees to be productive and reach their full potential.