Zachary has been trying to work on an essay for almost three hours, but he can't seem to focus for more than 15 or 20 minutes at a time. what should he do so that the quality of his work doesn't suffer because of poor concentration and lack of energy?

a-push through his mental block and keep going until he finishes his essay
b-put the essay away and don't work on it for a few days
c-turn on the tv so that it'll wake him up enough to finish his essay
d-finish what he's working on and then stop so he can start fresh tomorrow

The right answer is "D-finish what he's working on and then stop so he can start fresh tomorrow".

When you have a block to study, do a writing, or some activity, the ideal is to stop the activity rest a little and continue later. Often lack of concetration is the result of a tired mind or body, because of this, we should give our body and mind time.

i think the correct answer would be adjustments in life roles.  this causes for one to adjust or change totally his/her career or lifestyle since the present is not beneficial to the life role he is at. for instance, you became a mother you would of course stop going to malls and enjoying life outside. you would be staying at home taking care of your child.

not sure maybe the subject closer to it or subject-verb agreement