Of the following, the individual who had the least enthusiasm for U.S.

imperialistic adventures as the nineteenth century ended was

a.TheodoreRoosevelt b. Alfred Thayer Mahan
c.GroverCleveland d. William McKinley

I think it is D

Nope. Check this site.

http://encarta.msn.com/encyclopedia_761554156_5/grover_cleveland.html

To determine which individual had the least enthusiasm for U.S. imperialistic adventures as the nineteenth century ended, we need to evaluate the stances of each option.

a. Theodore Roosevelt: Theodore Roosevelt was known for his aggressive foreign policy and imperialistic tendencies. He believed in expanding American influence overseas and famously said, "Speak softly and carry a big stick."

b. Alfred Thayer Mahan: Alfred Thayer Mahan was a naval officer and strategist who advocated for the expansion of the U.S. Navy and the acquisition of overseas territories. He argued that sea power was vital for a nation's prosperity and security.

c. Grover Cleveland: Grover Cleveland served two non-consecutive terms as president and was generally opposed to U.S. imperialism. He believed in a more cautious and isolationist foreign policy, prioritizing domestic issues over expansion abroad.

d. William McKinley: William McKinley was the president during the Spanish-American War, which led to the acquisition of territories such as Puerto Rico, Guam, and the Philippines. He supported U.S. expansion and imperialistic ventures.

Comparing these options, the individual who had the least enthusiasm for U.S. imperialistic adventures as the nineteenth century ended is Grover Cleveland (option c). Both Theodore Roosevelt (option a) and William McKinley (option d) had more pro-imperialistic stances and played active roles in expanding American influence overseas. Alfred Thayer Mahan (option b) also advocated for imperialism through his naval strategies.

Therefore, the correct answer is c. Grover Cleveland.