The correct answer is B. Pressure sensor.
A pressure sensor is a device that measures the pressure of a fluid (liquid or gas). It is used in a variety of applications, including automotive, aerospace, industrial, and medical.
A proximity sensor is a device that detects the presence or absence of an object without physical contact. It is used in a variety of applications, including security, automotive, and industrial.
A temperature sensor is a device that measures the temperature of an object. It is used in a variety of applications, including HVAC, industrial, and medical.
A touch sensor is a device that detects the presence or absence of contact with a surface. It is used in a variety of applications, including smartphones, tablets, and computers.