Which of the following statements accurately characterizes the general environment for managers?

a) It comprises only external factors beyond their control, influencing decision-making processes indirectly.
b) It includes both external and internal factors, all of which directly impact decision-making processes.
c) It consists solely of internal factors within their control, affecting decision-making processes directly.
d) It encompasses both external and internal factors, but only internal factors have a direct impact on decision-making processes.