The center of the milky way most likely contains a. empty space. b. a red giant star. c. a globular cluster. d. a supermassive black hole.

The center of the Milky Way most likely contains a supermassive black hole.

Explanation:

Because it is an eliptical galaxy, it has a little rotation to it but not enough to flatten out, thus the center would contain a supermassive black hole.

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