Final answer:
The provided information does not precisely state what delayed Mae Jemison's application to NASA, but it suggests her multifaceted career and achievements may have influenced her decision on when to apply.
Step-by-step explanation:
The specific reasons behind the delay in Mae Jemison's application to NASA are not detailed in the provided information. Based on the context given, it is possible that her extensive academic and professional pursuits may have influenced the timing of her application. Mae Jemison was a remarkably accomplished individual: an engineer, physician, and researcher before becoming the first Black woman to travel in space. She flew aboard the Space Shuttle Endeavour in 1992, contributing to various scientific research projects. Such a multifaceted career path could suggest that Dr. Jemison's application to NASA was thoughtful and came after she had gained considerable experience in her fields.