The requirement of probable cause works in tandem with the warrant requirement. A warrant is a document that allows police to search a person, search a person's property, or arrest a person. A judicial magistrate or judge must approve and sign a warrant before officers may act on it.robable cause must exist for a law enforcement officer to make an arrest without a warrant, search without a warrant, or seize property in the belief the items were evidence of a crime.
For the purpose of surveys, one type of question asked is the closed-ended (also closed or dichotomous) question, usually requiring a yes/no answer or the choice of an option(s) from a list (see also multiple choice).
Once you complete your list, review your questions in order to choose a usable one that is neither too broad nor too narrow. In this case, the best research question is c.. Question a is too narrow, since it can be answered with a simple statistic. Question b is too broad; it implies that the researcher will cover many tactics for reducing juvenile delinquency that could be used throughout the country. Question c, on the other hand, is focused enough to research in some depth.