Correct Answer: Municipal

Solution : The correct choice is the fourth option.

The incorrectly spelt word in the given sentence is municipial.

The correct spelling is municipal. It relates to a municipality, which is a local administrative division or governing body within a larger region, such as a city or town.

The meanings of the other options is as follows:

• A hospital is a medical facility or institution where individuals receive medical treatment, care, and sometimes surgery when they are ill or injured. 
• Government refers to the system or group of individuals and institutions that hold authority to govern and administer a country or region.
• A country is a distinct geographical area or region that is identified as an independent political entity with its own government, borders, sovereignty, and often a unique culture or identity.

Therefore, the correct sentence is: "The government is bringing a new law where every municipal will have its own hospitals across the country."