Answer:
Encourage the development of growth-positive institutions.
Step-by-step explanation:
Base on the scenario been described in the question, when she ask you She then asks you what the government can do to shorten the time necessary to double the size of the country’s economy, the best answer you can give to her is to encourage the development of growth-positive institutions. Because this is what will shorten shorten the time necessary to double the size of the country’s economy.