Which of the following best summarizes porciones?

Porciones refer to narrow tracts of land that are typically laid out in a manner that allows for efficient use of river frontage. This design was historically utilized in regions that required access to water for irrigation, transportation, or other economic activities. The elongated shape of porciones maximizes the length of shoreline or river access relative to the area of land. This configuration is essential for agricultural development, particularly in areas where waterways are critical for farming and settlement patterns. Therefore, characterizing porciones as narrow tracts designed for efficient river frontage captures their primary purpose and historical significance accurately. Other descriptions, while potentially relevant to land use, do not encompass the distinctive characteristics and intended usage of porciones as effectively.