Answer:
The T state.
Step-by-step explanation:
The synthesis of ATP in the organisms is mediated by the ATP synthase. ATP Synthase enzyme contains the two subunits called CF₀ and CF₁.
The mechanism of ATP synthesis is known as the binding chain mechanism or flip flop mechanism as the synthesis of ATP is coupled with conformation changes of CF₁ units.
When the electrons move through CF₀, it rotates the γ-subunit of the CF₁ which further rotates the nucleotide-binding sites of β-subunit. The binding sites contain three conformational states which interconvert which are O empty state, L or loose state which binds ATP and Pi and T tight state which binds ATP. The T state of the ATP molecule binds the ADP and Pi to ATP.
Thus, the T state is the correct answer.