B. take pictures of enemy land.
The U-2 is a reconnaissance aircraft that was developed by the United States in the 1950s. Its primary mission was to gather intelligence by taking high-altitude photographs of enemy territory, particularly during the Cold War with the Soviet Union. The U-2 was designed to fly at extremely high altitudes, up to 70,000 feet, which made it difficult to detect and intercept by enemy radar and aircraft. Despite its technological advancements, however, several U-2 planes were shot down over the years, most notably in 1960 when a U-2 piloted by Francis Gary Powers was shot down over the Soviet Union.