Why does the writer refer to "the great rule of conduct" in this address? To announce a new plan that he is putting into action with this address
To prepare for his rebuttal, which will come in the final paragraph
To put an emphasis on what he considers to be safe and ethical behavior
To remind his audience that he has a celebrated military background

the following key ideas correctly express the key sentence.

restate key idea: most people can learn to swim in ten short lessons.

restate key idea: the majority of water-accident victims require mouth-to-mouth breathing.

restate key idea: an empty, tightly closed gallon jug will support a tired swimmer.  

restate key idea: first aid is to prevent accidents as well as assist in rescue.

explanation: the key idea needs to have the same topic as the key sentence (drowning and safety).

and your question what topic are you in trouble with?

the correct answer is "the rhythm and rhyme scheme add to an eerie and suspenseful tone". poetry is literature written in stanzas and lines that use rhythm to express feelings and ideas. poets will pay particular attention to the length, placement, and grouping of lines and stanzas. this is called form. lines or whole stanzas can be rearranged in order to create a specific effect on the reader.

a diary because you can right about your sex life