Probst and Estrada $(2010)$ wanted to see if organizational safety climate and supervisor safety enforcement were strong predictors of accident under$-$reporting. They measured supervisor safety enforcement using $3$ survey questions rated on a scale from $1($strongly disagree$)$ to $7($strongly agree$).$ The questions were:

My supervisor strictly enforces safety rules and regulations.

My manager praises me when he or she sees that I am following proper safety procedures.

When I ignore safety rules, my supervisor punishes me$.$

In this study, supervisor safety enforcement has which scale of measurement?

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a Nominal

b Ordinal

c Interval$-$Discrete

d Interval$-$Continuous

e Ratio$-$Discrete

Ratio $-$ Continuous