Which of the Three Most Commonly Used Metals Must Be

question 6

Multiple Choice

Which of the three most commonly used metals must be smelted from its ore minerals in the presence of carbon monoxide gas (from the burning of carbon-based charcoal) ?

• A)aluminum
• B)copper
• C)iron
• D)None of the above are correct.

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Definitions:

Sunk Cost

Costs that have already been incurred and cannot be recovered or changed.

Make or Buy

A decision-making process in which a company chooses between manufacturing a product internally or purchasing it from an external supplier.

Significant Sunk Costs

Expenses that have already been incurred and cannot be recovered or changed.

Avoidable Cost

Costs that can be eliminated if a certain decision is made, not incurred if a particular activity is avoided.