I think 1 is C. I think 2 is D. I think 3 is FALSE. I really am not sure. Sad because we just learned this.

The Correct choice is : C. <u>Solids</u>
Sound waves need a medium to propagate, and the most suitable medium for that is solids, where it travel the fastest or with greatest efficiency.
The subject should be in math.
your answer is 12 and 3
~Hello there!
Your question: ________ refers to the tendency for a foundation material to lose its internal cohesion and fail mechanically during earthquake shaking.
Your answer: Liquefaction refers to the tendency for a foundation material to lose its internal cohesion and fail mechanically during earthquake shaking.
Any queries ^?
Happy Studying! :D