
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.
Under the leadership of Mikhail Gorbachev, the doctrine of Perestroika called for more local control and free-market practices. The correct option among all the options that are given in the question is the second option or option "B". I hope that this answer has come to your help.
The population started rising through the 1990s and into the new century thanks to the young migrant population of London having more babies! Birth rate increased while death rate fell in many boroughs across London.
The answer would be...
2) the temperature is too cold.
Answer:
The answer is D.
Explanation:
Southeast Asia consists of eleven countries that reach from eastern India to China, and is generally divided into “mainland” and “island” zones. The mainland (Burma, Thailand, Laos, Cambodia, and Vietnam) is actually an extension of the Asian continent.