Correct Answer:
C. Hygrometer
Scientific instruments are designed for precise measurements of specific physical quantities. To measure the amount of water vapor in the air, or humidity, a specialized tool is required.
- A Hygrometer (option C) is the correct instrument used to measure humidity. It quantifies the moisture content in the atmosphere.
- A Thermometer (option A) measures temperature.
- A Barometer (option B) measures atmospheric pressure.
- An Anemometer (option D) measures wind speed.
Each instrument serves a distinct purpose in meteorology and other scientific fields, providing specific data about environmental conditions.