Teacher:In this task, you are given a question and answer options for that question. Using this information, you have to classify each text into different topics: medicine, nursery, psychology, chemistry, pharmacology, biology.
Teacher: Now, understand the problem? Solve this instance: Question: The response trend is an important source of error that diminishes the quality of: 
 Options:  <0> Projective techniques. <1> The semi-structured interview. <2> The methodology of the Observation. <3> The Self-reports. <4> The Objective Techniques.
Student:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
psychology