Control rods are made of

a. plutonium

b. liquid sodium

c. carbon

d. cadmium

 D. Cadmium

Explanation:  Control Rods are the rods are which are used in the nuclear reactor.

They are used to control nuclear fission rate of uranium and plutonium.These elements help in absorbing neutrons within themselves.

Thus out of plutonium, liquid sodium , carbon, and cadmium, Cadmium is used as the control rod.

If these control rods are removed, then there will be production of more heat due to the presence of neutrons .

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