What would be the impact on the business in Palampur if the roads were closed.

There will be no income for the company

If the roads are closed it makes the businesses go into loss due to no employ or client could go for work!

d. new methods of assembly are introduced.

explanation:

this allows for the goods to be made on a larger scale. not faster because now it is shown to be made better, hence the greater productivity in the question. it is calling for something new to be introduced.