Answer:
The answer is correctly stated as opportunity cost
Step-by-step explanation:
Opportunity cost is simply opportunity missed out because one chooses a different course of action.
It pure economics terms it is cost of an alternative forgone,however in Finance, it is extended to capture benefits,profits,advantages missed for sticking to a different course of action,or even investing differently.
Specifically,SW's action of declaring dividends of $20 million meant that it could not invest the $20 million in a project whose return is $200 million, hence the benefit missed is the $200 million.
In other words, SW's opportunity cost is the $200 million.