New York State Trooper

The main idea is the central point of a passage: what the writer most wants the reader to understand. It is different from the topic. The topic is the subject, expressed in a word or short phrase; the main idea is a complete statement about that subject.

If a passage discusses patrol vehicle maintenance, the topic is "patrol vehicle maintenance"; the main idea might be "Regular maintenance of patrol vehicles is essential for trooper safety and operational readiness."

In a single paragraph, the main idea is most often stated in the first or last sentence. In a longer passage, it usually appears in the opening paragraph or is restated in the conclusion. It is not always stated at all; sometimes you must build it from everything the passage says. Repeated words and ideas are strong signals. Ask three questions: What is this passage mostly about? What point is the writer making about it? How would I say that in one sentence?

Sample Passage

Before each patrol shift, the assigned trooper must complete a pre-shift inspection of the patrol vehicle. The inspection covers the exterior, including tires, lights, and body damage; the interior, including the prisoner compartment, which must be searched for weapons or contraband left by a previous occupant; and the equipment, including the radio, emergency lights, siren, and first-aid kit. Any defect is recorded on the vehicle log and reported to the zone sergeant before the vehicle leaves the barracks. A vehicle with a defect affecting its emergency lights, siren, or brakes may not be used for patrol until the defect is repaired. The inspection protects the trooper, the public, and any person later transported in the vehicle, and it establishes that any item later found in the prisoner compartment was not there when the shift began.

Main-idea choices fail in predictable ways. A choice that is too narrow states one detail as if it were the whole point. A choice that is too broad goes beyond the passage to a larger subject. A distorted choice uses the passage's words but changes their meaning. The correct choice covers the whole passage without overstating or understating its scope.

Supporting Details

Supporting details explain, illustrate, or prove the main idea. The main idea tells you what the passage is about; the details show how the writer develops it. Major details support the main idea directly. Minor details support or explain a major detail. If a passage describes three duties of a trooper, each duty is a major detail and the examples under each duty are minor details. Questions most often target major details.

Kind	WhatItDoes	Example in a Law-Enforcement Passage
Fact	Anobjective verifiablestatement ,	"Anydefectisrecordedonthevehiclelog" .
Example	Aspecificinstancethatillustratesapoint	Adescriptionofhowatroopercalmedanagitated passage about de-escalation	1 driver ina ,

Kindsofsupportingdetail(Continued)

Kind	WhatItDoes	Example in a Law-Enforcement Passage
Reason	Explainswhysomethingistrueorrequired	"Theinspectionestablishesthatanyitemlaterfoundinthe
		prisonercompartmentwasnottherewhentheshiftbegan" .
Description	Specificorsensoryinformationthathelpsyou	Thecolor make damage andplateofavehicleinvolvedina , , ,
	picturesomething	collision

Signal words introduce details: for example, for instance, specifically, in particular, such as, including, first, second, additionally, furthermore, also, and moreover. For a detail question, find the sentence before you choose. The correct answer is stated directly or closely paraphrased. Be wary of choices that are accurate in real life but not mentioned, that alter a number or a condition, or that reuse the passage's words in a different sense.