Step 1: Recall the concept of normal profit.
Normal profit means revenue = cost (including opportunity cost). Profit = 0 (economic sense).
Step 2: Identify the point.
This occurs where total revenue = total cost, i.e., at the break-even point.
Step 3: Eliminate incorrect options.
- (B) Average profit → not the concept here.
- (C) LRAC → a curve, not a point of profit.
- (D) Fixed cost → irrelevant to profit condition.
Final Answer:
\[
\boxed{\text{Break-even Point}}
\]