WILL AWARD MEDAL!

In "The Deadliest Tsunami in History," warning for an approaching tsunami can be difficult because

A. The large waves are very small when out at sea.
B. They are so common that the signs are often unnoticed.
C. They are more frequent now because of the climate changes.
D. The equipment designed to warn for them has not been released for public use.

Question

WILL AWARD MEDAL!

In "The Deadliest Tsunami in History," warning for an approaching tsunami can be difficult because

A. The large waves are very small when out at sea.
B. They are so common that the signs are often unnoticed.
C. They are more frequent now because of the climate changes.
D. The equipment designed to warn for them has not been released for public use.