The correct answer is Gateway will be built differently than the International Space Station.
Explanation:
The central idea of this extract is to demonstrate that the Gateway will be built in a totally different way from ISS (International Space Station).
It even begins by saying that Gateway will be smaller, and from there on provides details of its construction and compares them to those of the ISS. Gateway will have five modules while ISS is made up of 15.
Then it provides more details of how the Gateway construction will be.
Given this information we can say that the correct answer is: Gateway will be built differently than the International Space Station.
