Which of the following is the best example of labor investment for a retail store?

the owner of the store interviewing a clerk

hiring sales clerks and managers

buying cash registers and displays

renting land for the building

I believe the answer is: hiring sales clerks and managers

Labour investment refers to the use of capital injection to buy human resources with certain skill set that would improve the overall productivity of the businesses. We can always assume Hiring employees from all position could be considered to be a labour investment even though their performance still questionable.