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Read This Paragraph and Answer the Questions That Follow It

question 6

Multiple Choice

Read this paragraph and answer the questions that follow it.
(1) Rollover accidents-crashes in which a vehicle flips over or tumbles-are some of the deadliest accidents on our roads and highways. (2) Many of these accidents occur because the driver loses control of the vehicle due to one of three causes. (3) The first cause is speeding. (4) According to the National Highway Traffic Safety Administration, about 40 percent of fatal rollover crashes happen because the driver is going too fast and loses control of the vehicle. (5) A second common cause of rollover accidents is driver impairment. (6) In n early half of all fatal rollover crashes, the drivers had been drinking alcohol, which affected their judgment, muscular coordination, and vision and caused them to lose control. (7) A third common cause of rollover accidents is driver distraction in rural areas. (8) Drivers who are trying to answer a ringing cell phone or changing radio stations can let their attention drift away from the task of driving. (9) If the vehicle veers off the road in a rural area and the driver jerks the steering wheel to correct the problem, the vehicle's tires may dig into soft soil or hit the edge of the pavement, "tripping" the vehicle into a roll. (10) Consequently, almost two-thirds of fatal rollovers occur in rural areas where the posted speed limit is 55 miles per hour or more.

Adapted from "Rollover," U.S. Department of Transportation, http://www.safercar.gov/Rollover
How many causes or effects does the writer present?

Definitions:

Storage

The action or method of storing goods or information for future use.

Vascular Cambium

Vascular cambium is a layer of tissue in plants that produces new phloem and xylem cells, contributing to stem and root thickness.

Xylem Arms

Specialized structures in plants that transport water and nutrients from the roots to other parts of the plant; although "arms" is not a standard term in botany, it metaphorically suggests the branching nature of xylem vessels.

Pericycle

A layer of cells found in plant roots, between the endodermis and the phloem, capable of initiating lateral root growth.