By 1940, the pilot Jacqueline Cochran held seventeen official national and international speed records, and she earned them at a time when aviation was still so new for many of the planes she flew to be of dangerously experimental design.

• Aand she earned them at a time when aviation was still so new for many of the planes she flew to be  
• Bearning them at a time that aviation was still so new for many of the planes she flew to be  
• Cearning these at a time where aviation was still so new that many of the planes she flew were  
• Dearned at a time in which aviation was still so new such that many of the planes she flew were  
• Eearned at a time when aviation was still so new that many of the planes she flew were