A topic that would be narrow enough for Pat's assignment would be Austin, Texas.
Explanation:
As Pat is supposed to write only a paragraph about traveling, he shouldn't choose a broad topic. Broad topics mean a lot of text, and that is not Pat's task. Out of listed topics, Europe is the broadest one, as Europe is a continent with many beautiful countries Pat could visit. Canada and Japan are not continents, but they are still big countries with many cities and possible destinations. The narrowest of the topics is Austin, Texas. Austin is the capital city of the US state of Texas and represents the smallest unit of all listed options. Realistically speaking, a city is the only place Pat would actually manage to properly visit during a single weekend, as it's just small enough but still interesting, because it's got a lot to offer nonetheless.
Learn more about Texas here: https://brainly.com/question/1470906
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