To ensure full marks for each question identify the evidentiary rule or exception applicable to the issue if it is not otherwise identified for you in the question.

1. Margaret Evans was stopped by police at a roadside checkpoint designed to reduce impaired driving. Sally had not consumed any alcohol but police detected the odour of marijuana and asked Margaret to open her glove compartment. Margaret complied and a quantity of marijuana was discovered. Margaret was charged with possession of a narcotic.

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