Final answer:
The subject of this question is English and the grade level is High School. The most appropriate option would be D) They should be dead because they act like they are dead.
Step-by-step explanation:
The subject of this question is English and the grade level is High School.
The question is discussing the behavior of individuals who act like they are dead, but are not actually dead. The options given suggest possible reasons for their behavior: they will be found and forced to leave, they are ghosts because they died years ago, they are already in the grave because they are dead, or they should be dead because they act like they are dead.
In this context, the most appropriate option would be D) They should be dead because they act like they are dead. This option suggests that their behavior is so indicative of death that they should logically be dead.