Ais easily recognized, as it has numbers that range from a minus end to a corresponding plus end, with or without a zero as the midpoint.

a. semantic differential scale
b. nominal scale
c. likert scale
d. stapel scale

stapel scale

Explanation:

In simple words,  The staple scale is characterized as a grading scale close to a standard (uni polar) adjective, designed to collect perspectives from the participant on a particular topic or case. The survey topic is made up of an even number of non-neutral-point answer choices.      

This scale was given the name after Jan Stapel, its designer. Because it's an un-comparative and unambiguous measure, it renders it very identical to a rhetorical differential level except the only distinction becoming the involvement of the only adjective here between the good and bad classification rather than getting two dissenting adjectives.                  

i would say their habit of breaking down.