Option 1 states that relative humidity increases with increased temperature. This is incorrect. Relative humidity is a measure of the amount of moisture in the air compared to the maximum amount of moisture the air can hold at a particular temperature. As temperature increases, the air can hold more moisture, so the relative humidity decreases. Therefore, option 1 is incorrect.

Option 2 correctly states that relative humidity decreases with increased temperature. As mentioned before, warmer air can hold more moisture, so the relative humidity decreases as the air temperature rises. This is because the actual amount of moisture in the air remains constant, while the capacity of the air to hold moisture increases. Hence, option 2 is the correct answer.

Option 3 states that relative humidity decreases with decreased temperature. This is incorrect. When the temperature decreases, the air`s capacity to hold moisture also decreases, so the relative humidity increases. Therefore, option 3 is incorrect.

Option 4 states that relative humidity has no relation with the increase or decrease of temperature. This is also incorrect, as explained in the previous options. The relative humidity is inversely related to the temperature. Hence, option 4 is incorrect.

In conclusion, option 2 is the correct answer because relative humidity decreases with increased temperature.