It should be D They introduce my supporting details since when your writing your body paragraphs you use supporting details to make the paragraphs so yeah...
Hope this helps
~Cupkake
The Stage Manager in the play Our Town serves as a "narrator"; he (or she, in some productions) explains the action to the audience, and since there is little in the way of set decoration, his commentary takes the place of some stage direction. He is a conduit between the action of the play and the audience, at times breaking the "fourth wall" by speaking directly to the audience, and at other times participating in the action. His role is similar to the role of the Chorus in ancient classical Greek drama, commenting on the action to help clarify some of the dramatic elements for the audience and helping to move the plot along.
Selective attention refers to the ability of the person to put his full attention on a single thing or event. During this time, the person is selectively attending a certain event or stimuli. Whereas, in divided attention, the person is capable of putting his concentration in two or more events or things. Therefore, the person has an ability to divide his attention in divided selection case.
What exactly do you need help with? Writing an essay?