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The underlined word "begin" means "to start" or "to commence." The root in "begin" conveys the idea of initiating or starting something. Therefore, the closest meaning related to the options provided would be "to plan," as it implies the start of an activity. However, if "to start" or "to initiate" was an option, that would be the most accurate.
If none of the provided options match directly, the best option would likely be "to plan," as it involves the first steps toward construction. However, it should be noted that planning specifically isn't the only aspect of "beginning" something.