In what type of production does each product undergo the same production steps simultaneously?

The correct answer is mass production, which is characterized by manufacturing large quantities of standardized products, typically using assembly lines or automated processes where the same production steps occur simultaneously. This method allows for increased efficiency and lower costs per unit due to the volume of production and the streamlined processes involved.

In mass production, products are created in continuous flows, applying the same steps to each item being produced simultaneously. For instance, in an automotive assembly line, multiple vehicles go through painting, assembling, and inspection stages at the same time, allowing for higher output and uniformity across products.

Batch production involves producing goods in groups or batches where each batch goes through the production steps before moving onto the next batch. Job production focuses on creating unique or custom products one at a time, which means production steps are not applied simultaneously to multiple products. Process production refers to manufacturing processes that can include continuous flow but is traditionally tied more to industries like chemicals and food production, where the output is not always identical or standardized.

Understanding these distinctions clarifies why mass production is the most suitable answer, as it directly involves simultaneous processing of identical products.