The correct answer is option 4, rainfall.
In the given rough map, the shaded portion represents a climatic element. By analyzing the options, we can determine which climatic element specifically is being represented through the shaded portion.
Option 1, temperature, refers to the measure of the average kinetic energy of the particles in a substance. Temperature is typically represented using a scale, such as Celsius or Fahrenheit, and is not specifically related to a shaded portion on a map. Therefore, option 1 is not the correct answer.
Option 2, humidity, refers to the amount of moisture present in the air. Similar to temperature, humidity is not represented through a shaded portion on a map, but rather through specific measurements and scales. Therefore, option 2 is not the correct answer.
Option 3, atmospheric pressure, refers to the force exerted by the weight of the atmosphere on a unit area. Again, atmospheric pressure is not visually represented through a shaded portion on a map. Therefore, option 3 is not the correct answer.
Option 4, rainfall, refers to the amount of precipitation in the form of liquid water that falls from the atmosphere to the Earth`s surface. On a map, shaded areas are often used to indicate regions with