Which of the following is most closely related to an activated complex?

The answer is Transition state.  This is most closely related to Activated Complex. The transition state is the one molecular arrangement that happens at the peak of the energy diagram of the reaction. The activated complex may be present at any point near the transition state.

Dmight be the correct answer

C) the increase in atmospheric pressure pushes the walls of the balloon outward thus making it  is the answer.hope i you.