WASHINGTON - Secret Service officials suggested Monday that a dramatic suicide, rather than an assassination attempt, was the most likely motivation behind the crash on the White House South Lawn of a light plane piloted by Frank Corder, a 38-year-old truck driver with a history of alcohol and drug problems. The plane's dive onto the White House South Lawn at 1:49am Monday "does not appear directed toward the President," Secret Service spokesman Carl Meyer told reporters, warning that the conclusion was "very preliminary".

The plane contained no explosives or other weapons, Meyer noted, and investigators have found no evidence that Corder had any political grievance against President Clinton nor that he had ever threatened the Clintons. Investigators did discover that Corder, who lived in Perryville, Md., northeast of Baltimore, had been treated last year for alcoholism at the Perry Point Medical Center, a VA hospital in Maryland, had separated three weeks ago from his wife, and had been distraught over the death of his father last spring.

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1. Schematize the reasoning in the passage (there is just a single argument; no tributaries).
2. Which of the following IQs fits this case the best?

Group of answer choices

Why did Corder crash his plane into the lawn?

Why did Corder try to assassinate the President?

Why did Corder's plane crash into the lawn?

Why was Corder flying near the White House?

3 Imagine you are investigating the case. What new support might you discover that would change the way you would rank the rivals? List that new piece of support, and say what difference it would make to the ranking.