"If I were you" is an example of D) passive voice and subjunctive mood.
Passive means you are not the one performing the action, and subjunctive mood is a wish which usually begins with if.
We have to do our homework before dinner, then we're free to watch TV, or go outside.
He could not imagine the possible danger he could face. This means that he did not prepare properly.
The first one,
Readers can use them to identify main ideas at a glance.
