To complete the cause and effect table, we need to identify a cause that logically leads to the effect listed. The effect is “Companies began to prioritize advertising and use the services of professional advertising firms.”
A suitable cause could be:
Cause: The new urban working population had more time and money to spend on shopping.
Effect: Companies began to prioritize advertising and use the services of professional advertising firms.
This completion indicates that as the urban working population became more affluent and had leisure time, companies recognized the opportunity to market their products more effectively, thus leading to increased advertising efforts.