Which is the most valid counterargument for the claim that the three mile island accident proves that nuclear power is unsafe?
a. nuclear plants no longer use nuclear fission.
b. the accident only released harmless gamma rays.
c. the three mile island reactor did not use fuel rods.
d. no one was actually harmed in the three mile island accident.

The correct answer is D) No one was actually harmed in the Three Mile Island accident.

The most valid counterargument for the claim that the Three Mile Island accident proves that nuclear power is unsafe is"No one was actually harmed in the Three Mile Island accident."

Dauphin county, in Harrisburgh, Pennsylvania is the place where the Three Mile Island Nuclear Generation Station is located. An accident known as The Three Mile Island accident occurred on March 28, 1979, when reactor number 2 was partially melted.   The accident was rated "five" in the International Nuclear Event Scale. No one was harmed, that is why the most valid counterargument for the claim that the Three Mile Island accident proves that nuclear power is unsafe is"No one was actually harmed in the Three Mile Island accident.

zheng he was a chinese explorer who lead seven great voyages on behalf of the chinese emperor. his seven total voyages were diplomatic, military, and trading ventures, and lasted from 1405 – 1433. however, most historians agree their main purpose was to promote the glory of ming dynasty china.

explanation:

b)

it created free trade throughout the colonial territories.