Read the following excerpt and solve the problem below. you know on the basis of a priori knowledge that dinner is eaten in the evening, not the morning, therefore, your friend means six p. m., not six a. m. if your mother says she is going to drive to town, you know a priori that she will drive the car, not a team of horses or a semi truck use a priori knowledge to make an inference from the following implication: an advertisement claims that its margarine is higher in polyunsaturates than its competitors. you infer that polyunsaturates you. a. healthy b. unhealthy c. neither healthy nor unhealthy