PLEASE ANSWER

Airport security uses electromagnetic waves to see items inside of luggage without having to open the bags. Which type of electromagnetic waves would be best for airport security to use?

A, X-rays would be best because they are low-energy waves that can penetrate gases.

B. Radar waves would be best because they are high-energy waves that can penetrate solids.

C. Radar waves would be best because they are low-energy waves that can penetrate gases.

D. X-rays would be best because they are high-energy waves that can penetrate solids.

Answer is D

Explanation:

xrays would be far more efficient at detecting objects through solids.

answer: any goods being imported from another country may be subject to issued by the federal government are tariffs

explanation:  

tariffs are a tax on anything that are imported from abroad. government use them to protect and boost their local industries and the thought is that they encourage consumers to buy local instead of importing and they will hope will protect jobs and economy in the country that implements them  

the answer your looking for is c).