Answer:
B or C
Step-by-step explanation:
Measurement is the assignment of a number to a characteristic of an object or event, which can be compared with other objects or events. ... This system reduces all physical measurements to a mathematical combination of seven base units. The science of measurement is pursued in the field of metrology.
Multiplication property; distribution property of an exponent. Multiply exponents together, then distribute the ¨( )¨
16xy, 24x^2y^2 are two expressions with gcf of 8xy.