Concept:Weather elements must be matched with their correct measuring instruments.
Explanation:Humidity is measured using a hygrometer.
A barometer is used to measure atmospheric pressure, not humidity.
Rainfall is correctly measured with a rain gauge.
Sunshine is correctly measured with a sundial.
Wind-speed is correctly measured with an anemometer.
Therefore, the incorrect match is humidity with a barometer.
Answer:A. Humidity and barometer