Final Answer:
Great Britain has a similar "New Deal," building Factories and Power stations, but they too must maintain military spending. The correct option is b) Factories, Power, maintain.
Step-by-step explanation:
Factories and Power Stations:
The original statement mentions building something similar to a "New Deal" in Great Britain, and the options provide various combinations. The correct pair is Factories and Power stations. This aligns with the idea of economic development and infrastructure improvement.
Maintain:
The second part of the statement addresses the necessity to do something with military spending. In this context, the appropriate term is maintain, indicating that Great Britain needs to sustain or keep its military spending at a certain level. The correct option is b) Factories, Power, maintain.