Respuesta :
Answer:
D
Explanation:
I think they would design a airplane with this new metal first because they have to find the right balance for this new type of metal. They can't just sell a airplane with a new metal that has a different weight immediately they need to test it and design it first.
Answer:
D
Explanation:
The answer is D, because while it is important to market the material and make sure people are interested in buying, they first need to try and design a plane using this material. There is no use selling a plane made out of this material, if a plane cannot be built.