Choose the sentence from this excerpt that best supports the claim that Klaus Fuchs should not have been allowed to work on the Manhattan Project.
1. Japan was an enemy during World War II; it had continued to fight after its ally, Germany, had surrendered in May.
2. The United States dropped a second bomb three days later, on August 9.
3. After the war, Fuchs returned to England.
4. The evidence specifically involved the passing of atomic bomb secrets.
The sentence that best supports the claim that Klaus Fuchs should not have been allowed to work on the Manhattan Project is:
4. The evidence specifically involved the passing of atomic bomb secrets.
Explanation: This sentence highlights Fuchs’s actions related to leaking sensitive information about atomic bomb technology. This breach of trust and security indicates that he posed a significant risk to the project and demonstrates why he should not have been permitted to participate in such a critical and secretive undertaking.