Answer:
Auxiliary data from existing landcover charts, aerial photos, photography, or AVHRR can also be used in conjunction with field visits to improve map precision predictions. This improvement in precision is achieved by the use of an improved prognosis widely used in polling surveys.
Explanation:
With no additional problems in the research methodology without any unnecessary field visits, basically major increases in performance can be achieved. The first and only additional cost of obtaining the auxiliary data is incurred. The time of loss could be used with the random sample or systematic selection when the intermediate process is available throughout the region defined by the map of the land use/cover.
