A bread-making factory has the production process shown in the figure below. There are three operations (mixing, baking and packaging) in sequence, but it does not matter which oven is used. The factory is considering purchasing faster equipment to replace one of the existing operations. Which operation should be first considered? 
Definitions:
Intelligence Quotient
A measure of a person's relative cognitive abilities as compared to the general population, often represented by a numerical score.
Inappropriate Suppression
The unhealthy or maladaptive practice of forcibly inhibiting or restraining one's authentic thoughts or feelings.
Healthier Alternative
An option considered to be better for physical or mental well-being compared to another, potentially harmful one.
Emotional Balance
The ability to manage emotions effectively, maintaining equilibrium between positive and negative feelings.
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