B is the correct answer to your question
<span>The correct answer is: It is used to synthesize ATP through substrate-level phosphorylation.</span>
<span>The free energy released as electrons are passed from photosystem II to photosystem I drive pumping of H+ and building a gradient. H+ flow down their gradient and when they pass through ATP synthase, the ATP is produced by substrate-level phosphorylation (ADP+Pi).</span>
Pretty sure the answer is potassium. Hope that helps:)
Base of the substitution of the codon or frameshift mutation
Darwin's "Origin of Species" and Lamark's "Theory of Inherited Characteristics"