Final answer:
Cars are the most likely to be manufactured in a Flow MPC environment, which is used for mass production of standardized items, such as in the automotive industry.
Step-by-step explanation:
The item that would be manufactured in a Flow MPC (Mass Production Control) environment from the given options is likely to be Cars. Flow MPC is a system designed for the mass production of standardized products through a series of efficient production steps and is well-suited to the automotive industry. In contrast, manufacturing of computers can involve more customization, gasoline involves extraction and refining processes, and a parking garage is related to construction, which does not follow the same repetitive manufacturing process as cars.