The three correct statements are:
1) He had served on the Senate and Cabinet- Before becoming the US President, FDR was a Senator from the state of New York.
2) His confidence gave hope to the new nation- One of his biggest promises was to create a new deal for American society, one in which the government would get directly involved in helping the American economy to recover.
3) He was afflicted with Polio- He was diagnosed with this disease in his late thirty's. The disease ultimately left FDR unable to walk , forcing him to be in a wheelchair for the rest of his life.