Question

Which of these pieces of evidence provides the strongest support for the claim that the Chunnel was a significant engineering challenge?

A. The engineers had to find a way to keep the tunnel from collapsing under the weight of the waten.
B. Engineers used huge tunnel-boring machines to create the tunnels.
C. Concrete ners were installed to support the tunne walls.
D. The Chunne went under water.​

Answer 1

A.

Step-by-step explanation:

Because if you read the passage

A has more depth and showing how challenging it is. And it has the thrill.