Use the following to answer question: 
-(Table: Total Product and Marginal Product) Use Table: Total Product and Marginal Product.Negative marginal returns begin when the _____ worker is added.
Definitions:
Social Attachment Process
The formation of a strong emotional bond between individuals, crucial for personal development and social integration.
Young Ducks
Often referenced in imprinting studies, highlighting the critical period shortly after birth when they form attachments and follow moving objects.
Behavior Systems Approach
A theoretical perspective that views behavior as the outcome of integrated biological and psychological systems.
General Laws
Universal principles that apply broadly across contexts, systems, or fields of study.
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