Greg downs recently has noticed that the plant he is managing is delivering only 30 percent of its products on time. to determine what is causing the problem, he assembles the various department heads and the plant supervisor to get their input on the matter. although the ultimate responsibility is his, he has no difficulty in delegating decision-making authority to any member of this group. this style of leadership suggests that greg is a(n) leader.

democratic leader

Explanation:

Democratic leader -

It is the type of leadership quality , which is , participative in nature ,  a type of shared leadership , where all the leaders collectively take any decision , is known as the quality of a Democratic leader .        

In this case everyone in the organisation or company has the right to participate and exchange new thoughts or ideas .

hence , in the question , Grey is shown to be a democratic leader , as he assemble all the heads of different department to participate in the decision making process .