Answer: (C) Transformational leadership style
Step-by-step explanation:
The transformational leadership style is one of the most important leadership element as it inspire and also encourage the various types of innovate ideas.
The important of the transformational leadership style is that it give a clear vision and the direction to an organization and it also helps in influence the lower level part of the company.
According to the given question, Luis is the team member and he regularity motivated his team member due to the transformational leadership style.
Therefore, Option (C) is correct.