Answer
Option (b)
Work Step by Step
Oxygen acts as the final electron acceptor in aerobic respiration. At the end of the electron transport chain, an oxygen molecule accepts two hydrogen ions to form a water molecule.
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.