is NOT an effective way to do research about a job you want

Limiting the time you invest in researching the job is not an effective way of doing research on the job you want.

Explanation:

Researching the job you want requires time and dedication just like a full-time job. That's because you should not measure efforts for this research that can be the basis for planning your future and your livelihood. It is important to have a long period of time reserved just for that, in that time you should avoid any other type of activity that causes you to lose focus and attention in research, in addition to avoiding things that take away your dedication and effort.

with my knoladg i would say it was c