Answer:
Problem-Solution Text Structure: The author describes a problem and then explains how it was solved.
Step-by-step explanation:
From the text, we discover that the movie producer, Howard had a difficulty when filming Apollo 13. He was unable to film the space scenes. He got an answer which became the solution to the problem.
Special KC-135 airplane was the plane that was used to cover the space spaces of zero gravity.
This is truly a problem - solution text solution.