Six-year-old Freddie has a difficult time staying with one task until completion. There are times when he will start painting a picture, then a few minutes later want to watch a video which he rarely finishes. Freddie is demonstrating a lack of:.a. impulse control. b. perseveration. c. compensation. d. myelination.

Impulse control

Explanation:

Impulse control disorder is a mental problem in which a person faces trouble to control their emotions and behavior. The behavior of the person usually violates the norms of society.

This includes another behavioral disorder such as Kleptomania, pyromania, conduct disorder, etc. Male are more prominent in impulse disorder than females. This disorder is generally overlooked and over-judged Treatment for this disorder have used the psychotherapies, drugs, behavioral therapy, etc,  

Thus here in the above statement, Freddie has a difficult time concentrating on her work. This is an example of Impulse control.