The correct answer is: C. increasingly, moderately.
In a changing and increasingly unstructured business environment, creativity and innovation are being increasingly demanded of executives. This is because businesses need to be able to adapt to change quickly and effectively in order to survive. Creativity and innovation allow businesses to do this by coming up with new ideas and solutions to problems.
The other options are incorrect because they do not accurately reflect the level of demand for creativity and innovation in the business world. Option A, “highly, extremely,” is too strong. While creativity and innovation are important, they are not essential for every business. Option B, “progressively, increasingly,” is too vague. It does not specify how much demand there is for creativity and innovation. Option D, “excessively, rapidly,” is also too strong. It suggests that businesses are demanding too much from their executives.
In conclusion, the correct answer is C. increasingly, moderately.