Answer:
Semantic differential
Explanation:
Semantic differential: Semantic Differential is also known as SD. This is one of the methods of measurement that utilizes the subjective ratings of an object or a notion using scaling or ranging opposite adjectives to inquire about the connotative meaning of the object or concept.
In psycho-linguistics, the Semantic Differential technique uses an ordinal scale which is usually of 5 or 7 grades.