According to the Text, One Reason Environmental Uncertainty Is a Threat

According to the text, one reason environmental uncertainty is a threat to strategic managers is because

A) it is a costly and time-consuming process.
B) it creates a new playing field in which creativity and innovation can play a major part in strategic decisions.
C) it forces the strategic manager to be more stable.
D) it hampers their ability to develop long-range plans.
E) there are too many uncontrollable variables.