Suppose you slept in on saturday, read a book, drove to your parents' house, made your parents dinner, ate, drove home, and went to bed. on monday, according to levels of processing theory, are you more likely to remember if you were stopped by a traffic light on your way to your parents' house or what you had for dinner

The correct answer is what you had for dinner. 

According to Craik and Lockhart's levels of processing model, we are more likely to remember information that is meaningful, and deeply or thoroughly processed and encoded. In this instance, the food you had with your parents is more likely to be remembered compared to whether you encountered a traffic light and stopped. This is because dinner with loved ones is more meaningful and engages more senses such as visual (how the food looked), olfactory (how it smelled), taste of the food, and touch (the texture of the food). On the other hand, being stopped at a traffic light is not as deeply processed or encoded since it is not very meaningful and does not engage as many senses.