The correct answer is C. Medicine.
Dr. DeBakey was a well known cardiac surgeon. This means that he worked on the heart constantly during his operations. One of his crowning accomplishments was his help in developing the idea of a MASH. MASH (Mobile Army Surgical Hospital) was a medical unit used during World War II that served as a fully functioning hospital in combat areas. This helped soldiers to receive quicker medical attention after suffering injuries.
The land was cheap, so many Americans settled in Texas. Mexico tried to stop them, but they still came. Slavery was against Mexican law, but Americans brought slaves to Texas. Many American settlers and Tejanos, or Mexicans who lived in Texas, wanted to break away from Mexico. They did not like laws made by Santa Anna, Mexico’s president. The Tejanos and Texans decided to fight for independence.
If my memory serves me well, the law which states that a president had to get permission to remove anyone appointed by a past president is <span>The Tenture of Office Act.</span> It was used to impeach Andrew Johnson because he fired a secretary of War Stanton.