Question

one of the first problems that engineers solved was figuring out... going to the moon. rendezvous or the lunar orbit rendezvous was the better method for going to the moon. using information from mathematical prototypes, nasa chose the lunar orbit rendezvous method. the lunar orbit rendezvous method would require fewer rocket launches, less fuel, and a smaller and lighter spacecraft than the earth orbit rendezvous method. these advantages would allow the engineers to build the spacecraft in less time and to spend less money. once the decision was made to use the lunar orbit rendezvous method, engineers could begin designing the spacecraft and solving related problems. they could not start designing the spacecraft and solving related problems. they could not start designing sooner because the spacecraft constraints for the lunar orbit rendezvous method were different than those for the earth orbit rendezvous method. for example, the lunar mission vehicle for the earth orbit rendezvous method would need to house the astronauts for the entire journey to the moon and back to earth. but the lunar module for the lunar orbit rendezvous method would not need to carry astronauts for that long. why was it important to decide between the lunar orbit rendezvous method and the earth orbit rendezvous method near the beginning of project apollo? the lunar orbit rendezvous method had different constraints than the earth orbit rendezvous method. engineers could not start designing the lunar spacecraft until they knew which method to use to get to the moon. engineers followed the engineering - design process, which required them to solve this problem first.

Explanation:

The text mentions that once the method for going to the Moon was decided, engineers could begin designing the spacecraft. Different methods had different constraints for spacecraft design. So, choosing the method early was crucial for starting the design process.

Answer:

Engineers could not start designing the lunar spacecraft until they knew which method to use to get to the Moon.