The correct answer is A) his use of the military to control all three branches of government.
The statement that best exemplifies the dictatorial tendencies of Porfirio Díaz is "his use of the military to control all three branches of government."
Porfirio Díaz (1830-1915) was the military officer who became president and dictator or México, because he reelected seven times. He was president for 31 years. He had major experience as a military and rebelled against President Benito Juárez. Although he was a dictator, he did good things to modernize the country such as the construction of thousands of miles of railroads to connect many parts of the country.
