In Sampling,what Is a Parameter

Multiple Choice

In sampling,what is a parameter?

A) It is a nonprobability sample type for which a researcher identifies subgroups within a population of interest and then selects some predetermined number of elements from within each subgroup.
B) It is the extent to which a sample represents its population on a particular element.
C) It is a nonprobability sample type for which a researcher gathers data from the elements that happen to be convenient.
D) It is the actual characteristics of a population on any given variable; determined by measuring all elements in a population.
E) It is the principle that all elements in a researcher's target population have an equal chance of being selected for inclusion in the study.