Orlando, 14, frequently twists his head uncontrollably and yelps or grunts. if he has not done this for several hours, he has a sensation that can only be relieved by engaging in these movements and sounds. orlando has had this problem since he was 8. the most likely diagnosis is

Tourette's Syndrome

Explanation:

Tourette's syndrome is a problem with the nervous system in which the person has no control over his movements such as turning his head, making sounds, grunts et cetera.

These movements are known as tics and they cannot control these movements.

A person suffering from this order may have blurt out words, blink their eyes they do not intend to say.

Orlando is also suffering from this disorder.

answer; i believe that the correct answer is(d) nondisjunction during meiosis;