Martin decides to take a physics class, even though he has a very weak science background. While he is looking forward to the experience, he is also a little nervous. Martin's friend Toshio remarks "Man, you're crazy! I'd never take that class because I'd fail!" According to Atkinson, Martin and Toshio differ in their

Martin and Toshio differs in level of optimisim.

Explanation:

Optimisim is the state whereby an individual feels the urge of success or succeeding in any given endeavor to be embarked on irrespective of whether the person has an experience in that field or not. This mental state of mind differs from one individual to another and could be caused to manifest on an individual based on different factors.

Martin has a very high level of optimisim leading to him having a positive view on the physics class even though he has a weak background in science field while his friend, Toshio has a very low optimisim level, hence his pessimistic view on the idea by his friend.

could you go a bit more in depth with you question? it's quite hard to understand. as soon as you do that i will be glad to : )

the correct answer is c.