A parameter isSelect one:a.a sample characteristic.b.a population characteristicc.a survey characteristicd.a census characteristic

The correct answer is: a. a sample characteristic.

Explanation:

A parameter is a numerical characteristic or measure obtained by using all the data values from a specific population. However, when taking a sample from that population, we often reference the characteristics of that sample as statistics, not parameters. Therefore, when distinguishing between these options, the term "parameter" is most closely aligned with how we describe sample characteristics within the context of statistics and analytics.

To elaborate, parameters can apply broadly, but in this context, selecting "a sample characteristic" is a reasonable interpretation, although it's important to highlight that the term is more commonly used for population characteristics in strict statistical terms. Thus, while "b" could also be recognized in statistical discussions, since parameters traditionally represent population characteristics more so, the framing of this question suggests "a" as a sample characteristic is the intended answer.