The correct completion of this sentence would be the following...
Without a better understanding of who you are, where's the value?
This is because the psychologist is referring to the test itself in the statement that he is making. The test is basically telling you what you already know, therefore unless you somehow manage to truly learn something new about yourself with the test, it provides you with absolutely no value. This is what the psychologist is stating as a disappointment.
Answer: What is the effect? He is untrusting and impulsive. Lines 124-127: Explain what new information is revealed about Sergei's character in these lines. Sergei thinks that taking Yoni to the hospital would complicate things which understated the possibility of getting arrested for murder.
I think the best statement that explains why the author included both of these scenes in the story is that its purpose is to develop the relationship between the old man and the boy. The answer is letter D.