Which is the best choice for the box labeled "Answer" in the illustration below?

Question

Quizplus · Accepted Answer

Since the box labeled "Reactant" contains oxidized carrier B, the box labeled "Answer" should contain its counterpart, reduced carrier BH₂. This is because redox reactions involve the transfer of electrons from a reducing agent (which gets oxidized) to an oxidizing agent (which gets reduced). Therefore, the best choice for the "Answer" box would be D, reduced carrier BH₂.

Which Is the Best Choice for the Box Labeled "Answer