The reason for the construction of the Panama Canal that was MOST relevant to the creation of the Roosevelt Corollary to the Monroe Doctrine is:
B. the need to move United States naval ships between the Atlantic and Pacific Oceans.
The Roosevelt Corollary aimed to assert U.S. influence in Latin America and maintain stability in the region, which was directly linked to the strategic military and commercial interests facilitated by the canal. The canal allowed for quicker naval movements and reinforced the U.S. presence in both oceanic regions, aligning with the objectives of the Roosevelt Corollary.