Final answer:
Drug B demonstrated a stronger chemotherapeutic effect and has a significantly higher t-statistic compared to Drug A, indicating it should be prioritized for further human toxicity testing.
Step-by-step explanation:
Based on the provided data and t-statistics, Drug B suggests a more pronounced chemotherapeutic effect compared to Drug A. The mean cell count in wells treated with Drug B was only 12 cells/well versus the untreated control with 100 cells/well, indicating a strong antiviral capability. Additionally, the very high t-statistic of 466 for Drug B indicates a significant effect difference when compared to the control group. In contrast, Drug A with a mean of 96 cells/well and a lower t-statistic of 21, while still effective, shows a less pronounced effect than Drug B. Therefore, Drug B is the one that should be subjected to further testing for human toxicity levels.