Example Thesis Statements:

Ex: Based on the crime scene evidence, new evidence, and various theories, it is probable to believe that John F. Kennedy was not assassinated by Lee Harvey Oswald but by members of the Mafia.

Ex: Contrary to the widely held belief that Marilyn Monroe committed suicide, it is plausible to believe that she was actually murdered based on what was found at the crime scene, evidence discovered away from the crime scene, and several different theories.

Sample Thesis Statements (Problem/Solution Essay):

Because plastic is a major contributor to polluting our oceans, people should do their part by using reusable grocery bags and avoiding single use plastics.

Because eating disorders are often due to, in part, a sense of control and addiction, society should allow for more awareness, discussion, and therapy for all parties involved.