Explanation:

- Option 1: TR = TVC

- TR (Total Revenue) is not equal to TVC (Total Variable Cost) for producer equilibrium. These concepts aren't directly related.

- Option 2: MC = MR

- MC (Marginal Cost) should equal MR (Marginal Revenue) for producer equilibrium.

- When MC equals MR, profit is maximized as producing an additional unit neither increases profit nor incurs loss.

- Option 3: TC = TSC

- TC (Total Cost) equals TSC (Total Social Cost) is generally unrelated to producer equilibrium directly.

- Option 4: None of this above

- Incorrect since Option 2 is generally accepted in economic theory.