Read the paragraph from "how we entered world war i."

as ships piled up in home ports, american commerce threatened to come to a standstill affecting the entire national economy. the cabinet grew seriously alarmed. although wilson possessed the executive authority to arm ships, he was reluctant to take the step that would inevitably start the shooting. he preferred to ask congress for authorization, thus touching off the great debate and filibuster on the armed ship bill.

how does the author organize the text to support her viewpoint in the paragraph?
1 she compares and contrasts main details.
2 she states a main idea and offers details to make her point.
3 she uses repetition of the main point.
4 she details events in chronological order.