Matt just couldn't seem to make sense of the new process for billing. Although frustrated, Matt was determined to learn the new system and decided to take the manuals home over the weekend to study them and vowed to keep studying them until he fully understood the new process. Matt's decision is an example of .a. direction.
b. good work habits.
c. process fixation.
d. persistence.
e. intensity.

d) Persistence

Explanation:

Persistency is defined as the mechanism in which something is continuously followed , practiced,acted or believed even if their is opposition against it.It displays determination of something.

According to the question, persistence is shown through Matt's decision because he is constantly trying completely to learn about the new billing process through modules even though he doesn't find sense in the process

Other options are incorrect because direction, pleasant working habits, intensity and fixation of process  is not shown through continuation of act or idea even in presence of opposition.Thus, the correct option is option(d).

the answer to this question is d