Among the primary scales of measurement, the _________ has an absolute zeroa.interval scaleb.random scalec.ratio scaled.ordinal scalee.nominal scale

The correct answer is c. Ratio Scale.

Step 1: Understand the question. The question is asking which of the given scales of measurement has an absolute zero.

Step 2: Know what each scale of measurement means.

• Nominal Scale: This is the simplest scale of measurement. It is used for labeling variables, without any quantitative value.

• Ordinal Scale: This is the second level of measurement and can be used to rank order the values.

• Interval Scale: This is the third level of measurement. It has equal intervals of scale, but doesn't have a true zero point.

• Ratio Scale: This is the highest level of measurement. It has equal intervals of scale and also an absolute zero point.

Step 3: Answer the question. Among the given options, the Ratio Scale has an absolute zero. This means that it not only measures the order of the variables, but also the difference between them and their ratio. For example, weight is a ratio scale, because it has an absolute zero (0 pounds means no weight).