Final answer:
Junior's quick service french fry restaurant is exhibiting the corporate strategy of product diversification by adding tater tots to the menu.
Step-by-step explanation:
The type of corporate strategy exhibited by Junior's quick service french fry restaurant when adding tater tots to the menu is product diversification. Product diversification is a corporate strategy that involves expanding a company's product line by adding new products to appeal to a wider range of customers and increase sales.