Answer:
Option: B. Safety issues became less of a concern.
Explanation:
In 1979, the Three Mile Island nuclear power plant's cooling section malfunction, which caused some part of the core to melt in the TMI 2 reactor. The accident changed the understanding of nuclear energy in the United States. The accident introduced safety concerns among anti-nuclear activists, who expressed worries about health effects, which later resulted in new regulations for the nuclear industry.
