A taxidermist was involved in an auto accident at an intersection and sued the other driver, a phlebotomist. At the trial, the taxidermist testified that the phlebotomist failed to stop at the stop sign and hit him, so the accident was not his fault. The phlebotomist called a witness who testified that he has worked with the phlebotomist for many years, and she observed that she always completely stopped at every stop sign. The witness’ testimony should Question 6 options: a) be admitted, because it goes to show the phlebotomist's habit. b) be admitted, because it is evidence of the phlebotomist's cautious character behind the wheel. c) not be admitted, because the phlebotomist's character for careful driving can only be proved by opinion or reputation. d) not be admitted, because the phlebotomist's prior conduct cannot be used to prove he is a careful driver.