45.A change in total cost caused by adding one more unit to the production total is called:  A. Fixed cost.  B. Variable cost.  C. Marginal cost  D. Total cost

Break Down the Problem

1. Identify the core concept being asked in the question.
2. Evaluate the options provided.

Relevant Concepts

1. Fixed Cost: Costs that do not change with the level of production or sales.
2. Variable Cost: Costs that vary with the level of production.
3. Marginal Cost: The change in total cost that arises from producing one additional unit of a product.
4. Total Cost: The total expense incurred in reaching a particular level of output.

Analysis and Detail

1. The question specifically asks for the cost associated with increasing production by one unit.
2. Marginal Cost (Option C) directly refers to this change in total cost when production is increased by an additional unit, distinguishing it from fixed and variable costs.

Verify and Summarize

1. Given that the term defined in the question is associated with the incremental change tied to an increase in production, the most precise option is indeed Marginal Cost.

Final Answer

C. Marginal cost