c.they have executive, legislative, and judicial branches
Explanation:
A Country will not use the US constitution unless it's the US. There are countries that might not have States at all, even. And a mayor is never the title used by the head of state. So, the closest that we have to a Country Government is the division of the three powers described in option C.
<span>The Prime Minister and his cabinet are controlled Parliament. That's what I know I hope it's right i'm sorry if i got it wrong but i'm pretty sure this is the answer.</span>