Frida Kahlo was born on July 6, 1907, in Mexico City. She began painting after being severely injured in a bus accident in 1925 and is today considered one of Mexico's greatest artists. Kahlo grew up in the house where she was born, later known as the Blue House (Casa Azul). Her father, Guillermo, was a photographer who had emigrated from Germany to Mexico, where he met and married her mother, Matilde. Frida had two older sisters, Matilde and Adriana, and a younger sister, Cristina, born the year after Frida. At age 6, Frida contracted polio, which confined her to bed for 9 months; upon recovery she limped due to damage to her right leg and foot. Her father encouraged her to take up soccer, swimming, and even wrestling to aid her recovery. On September 17, 1925, Kahlo was riding a bus that collided with a streetcar, and she sustained serious injuries including a broken spine, collarbone, ribs, and pelvis. After weeks in the Red Cross Hospital, she returned home to recover and began painting during her recuperation, finishing a self-portrait the following year. In 1938, Kahlo had her first solo art exhibition in New York City. As an adult, she became politically active, joining the Young Communist League and the Mexican Communist Party, and she and her husband Diego Rivera befriended Leon Trotsky in 1937 after he fled the Soviet Union for political asylum in Mexico. Which of the following lists a correct sequence of events in Frida Kahlo's life?