In everyday conversations, scientific terms can be misused. Theory" one term that is often used incorrectly. Which of these sentences used the word "theory " In the proper scientific sense? Sims read about a new theory describing how the Moon formed. O B. Mrs. Rialto has a theory about why the oak tree in the schoolyard dying. Kubik has a theory about why so many students have strep throat this year. D. Detective Gordon says that he has a theory about who committed the crime.