Which of the following describes the ideal nature of a vision?

a. A vision reacts to environmental changes, rather than studying the events that have already taken place.

b. A vision provides a challenge that requires people to give their best.

c. A vision creates new opportunities by relying solely on formal strategic planning, competitor analysis, or market research.

d. Leaders share the vision on a narrow basis using a single channel to show that they are moving in a unilateral direction.