Answer:
1.b) Irrelevant revenues
2.d) Opportunity cost
3.b) Irrelevant revenues
4.c) Irrelevant variable outlay cost
5.e) Relevant fixed outlay cost
6.h) Sunk Cost
7.a) Irrelevant fixed outlay cost
8.g) Relevant variable outlay costs
Explanation:
Relevant Cost or Revenues are future cost or revenues that will change as a result of a decision that is made today.
Irrelevant Cost or Revenues are costs or revenues that are common and thus would not be different for any alternative taken in a decision.
Sunk Costs are costs that were already incurred in the past.