Answer:
Extraordinary claim
Step-by-step explanation:
When there is no factual support like research evidence to support a suggestion which is based on positive thinking or positive feeling or simply good intention then such a statement or suggestion is known as extraordinary claims. In this case, the suggestion that positive thinking can reverse illnesses like cancer is not supported by research proof. Although, positive thinking might help in recovery or healing but suggesting that it can cure a disease like cancer is certainly an extraordinary claim.