Final answer:
Jackson attempted to protect the rights of the common man by rejecting pork-barrel politics, fighting economic monopolies, and supporting the influence of more people in the nomination process. However, he did not support Henry Clay's Maysville Road project.
Step-by-step explanation:
Based on the information provided, the correct answer is B) By supporting Henry Clay's Maysville Road project. While Jackson attempted to protect the rights of the common man in several ways, such as rejecting pork-barrel politics, fighting economic monopolies, and supporting the influence of more people in the nomination process, he did not support Henry Clay's Maysville Road project. This project involved federal funding for the construction of a road entirely in Kentucky, which Jackson saw as beyond the scope of the federal government's powers.