The following is missing for the question to be complete:
A. Most of the behavioural signs but none of the emotional ones
B. Most of the cognitive and emotional signs
C. None of the cognitive signs but many of the emotional ones
D. None of the emotional signs but many of the cognitive ones
Answer: C. None of the cognitive signs but many of the emotional ones
Explanation: Cognitive signs of depression are fatigue, loss of interest, and they also affect effectiveness and competence at work, problem solving and higher thought. This also includes reduced concentration, and consequently reduced communication, forgetfulness, memory loss, etc. All this, according to the mentioned in the question, Harold does not have, or better to say he does not illustrate them, so that what he says are emotional signs of depression. These include isolation from society, a loss of joy and enjoyment in the things Harold enjoyed before, the sadness he feels and which can be replaced by irritability, then pessimism, etc.