Question

a saturn v test rocket (bottom right) is rolled toward the launch site at kennedy space center on may 25, 1966. during the second test flight, the saturn v rocket performed well on some tests but failed other tests. for example, some of the engines, called j - 2 engines, failed their tests. the j - 2 engines shut off before they were supposed to and would not turn back on. if the j - 2 engines did not work properly during a lunar mission, the rockets would not supply enough power to send the astronauts all the way to the moon. engineers tested several physical prototypes of the saturn v rocket before sending astronauts into space. complete the following sentence about physical prototypes. the purpose of testing the physical prototypes was to ________. brainstorm possible solutions to the j - 2 engines design problems identify new criteria to reduce the cost of the j - 2 engines find out how well the j - 2 engines worked in real - world conditions

Explanation:

The text mentions that during test - flights, engines like J - 2 had issues. Testing physical prototypes is to assess how components work in real - life scenarios. It's not about brainstorming solutions or reducing costs as the focus is on the performance during tests.

Answer:

find out how well the J - 2 engines worked in real - world conditions