Task: Class Definition Understanding (ontology: Earth_Environment/OBOE)

Which of the following definitions best describes 'Pascal'?

A. The the concept (symbol: Pa) is the SI derived unit of pressure. It is a measure of force per unit area, and defined as one newton per sqare meter.
1 Pa = N m-2
B. Unit of concentration often used for gasses (e.g., oxygen, or O2) because it is related to solubility measurements.
C. The the concept is defined as the value of the voltage across a conductor when a current of one ampere dissipates one watt of power in the conductor.[2] It can be written in terms of SI base units as: m2 · kg · s−3 · A−1. It is also equal to one joule of energy per coulomb of charge, J/C.
D. A the concept is one nautical mile per hour, which is equal to exactly 1.852 km/h and approximately 1.151 mph.

Answer: The the concept (symbol: Pa) is the SI derived unit of pressure. It is a measure of force per unit area, and defined as one newton per sqare meter.
1 Pa = N m-2