Question: A team of surveyors takes measurements of ground altitude at horizontal intervals of 1 meter over a 400 square meter area. These measurements can best be used to produce which representation of the area?

What is the correct answer to the question from the following choices?
OPT:
a). a topographical map;
b). a map of wind currents;
c). a plate tectonic diagram;
d). a chart of sedimentary layers;
a).