Vince Just Took an Aptitude Test and Discovered That He

Vince just took an aptitude test and discovered that he is well-suited to a profession that involves working with his mind rather than his hands. This is partly due to his personality, since knowledge work-in contrast to factory work and other industrial jobs-tends to be ________ from day to day.

A) lacking in structure, yet the same
B) more structured and less likely to change
C) less structured and more likely to change
D) the same in terms of structure and changes
E) more complicated, more structured, and more likely to change