Staple Scale is the correct answer
The correct answer is **Stapel Scale**.
A **Staple Scale** is an even-numbered, non-verbal rating scale that uses **single adjectives** instead of bipolar opposites. It typically ranges from **-5 to +5** (without a neutral point) and helps measure attitudes toward a concept.
Thus, the correct answer is:
$\boxed{3}$ **Staple Scale**