Answer:
Cyanide.
Step-by-step explanation:
If we look into the data, Jared must have been given Cyanide poison. His pyruvate enzyme has not changed at all. It would have been affected if he was given arsenic.
However, his NADH level has increased and his intermembrane level has decreased which indicates that he has been given Cyanide. As we know cyanide disrupts electron transport cycle, NADH can no longer transport electrons into the intermembrane space and it causes an increase of electrons in NADH chain while decrease of electrons in intermembrane as a result.