When studying finance or economics, the cost of a decision is also known as a(n)

personal cost.
financial cost.
long-term cost.
opportunity cost.

Hey Eric,

When studying finance or economics, the cost of a decision is also know as the opportunity cost.

Thus, the answer is D

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Opportunity cost.​

Explanation:  

  The opportunity cost is one of the effective cost of decision making when we studying about the finances and the economics.

The opportunity cost plays an important role for determining and also analyzing the capital structure in terms of business.

The opportunity cost basically represent the various types of individual and the investors benefits. It helps in guiding the many types of decisions making which is profitable in terms of investment.

Therefore, Opportunity cost is the correct option.