State whether the following is a measurement of length, area, volume, mass, density, time, or temperature
(a) 374.2 mg
(b) 77 K 
(c) 100,000 km²
(d) 25 ps

• A. volume, time, density, length
• B. mass, temperature, area, time
• C. density, temperature, length, time
• D. mass, time, length, temperature

Answer: (B)