d. giving the reader enough detail to form a picture in his or her mind.
The key to description is to give the reader enough detail or information in order to form or create a vivid picture of the thing, place or scenario in his or her mind. The important features, the characteristics of the subject being talked about must be clearly described an emphasize in order for a description to be a success. It is only when the listener or the reader be able to draw the scenario out of the descriptions given will we say that the description is delivered well.
The effect of the rhetorical language that appears in this poster, "Every minute counts!" emphasizes the idea that viewers should be contributing to the war effort at all times."
In this poster there is a picture of a worker, standing with his right hand in his pocket and smoking a cigarette. There are ships in the background and a clock with a ten minutes section highlighted. This is a poster from World War II, issued in Great Britain. This poster underscores the idea that it's everyone's duty to contribute to the war effort at all times. Every minute is precious.
When your text states that communication is unavoidable, it means that people will probably associate meaning to your actions, even when you don not intend to speak of something.