Final answer:
The student's question concerning protein-DNA binding affinity requires additional context to determine the critical experiment. Typically, binding assays assess the strength and specificity of protein-DNA interactions.
Step-by-step explanation:
The question posed by the student concerns the prediction of protein-DNA binding affinity using experimental data from binding assays. The experiment that is critical for predicting whether protein G will bind more strongly to DNA at site A, compared to protein H, is not specified among the given options and requires additional context to determine the answer.
Experiments typically related to DNA-protein interactions may include assessing the binding strength of proteins to specific DNA sequences and analyzing how mutations in either DNA or proteins can affect this binding. The question is likely referring to an experiment where the affinity of two proteins (G and H) to a specific DNA site (site A) is tested, but without the specific details of the assays or options, a definitive answer cannot be provided.