Answer:
A. high subjectivity.
Step-by-step explanation:
The Trait Theory claims that humans consist of a collection of certain innate attributes called traits. These characteristics are distinct and generally long-lasting attribute or we can say that a person's trait that makes him distinct from the others. The methodology emphasizes on how the group of followers experiences the effectiveness of leadership rather than any objective efficacy tests. Perceived effectiveness without the use of any scientific evidence does not assess real effectiveness and therefore this approach becomes highly subjective.