Question

examine the air pressure map
which type of line is shown on the map?
isobar
isotherm
radar
humidity

Explanation:

An isobar is a line on a map that connects points of equal atmospheric pressure. An isotherm connects points of equal temperature. Radar is a detection system, not a line type on such maps. Humidity is a measure of moisture, not represented by this line type. Since the map is an air - pressure map, the lines are for pressure.

Answer:

isobar