Pete's Peanuts wants to grow its overall productivity. Which investment would best help the company achieve this goal?

A.
a larger building to store its peanuts

B.
better advertisements for its products

C.
new uniforms for company employees

D.
an improved roasting and canning machine

D. An improved roasting and canning machine would best help Pete's Peanuts to grow its overall productivity as it would increase the efficiency of the peanut roasting and canning process, leading to faster output and increased production. A larger building would not necessarily improve productivity if the same equipment and processes are being used. Better advertisements and new uniforms may improve the company's image and reputation but would not directly contribute to increased productivity.