C). Sleep deprivation often results in ADHD.
'Sleep deprivation' is described as the condition in which a person is unable to receive insufficient or less sleep than required. This insufficient sleep leads to a variety of malfunctioning in our bodies.
As per the question, option C displays the statement that is false regarding the negative effects of sleep deprivation as 'ADHD'(Attention Deficit hyperactivity disorder' is an outcome of constant inattention, hostility, and hyperactivity which could be hereditary or due to the injuries, etc. and thus have no affiliation to sleep deprivation. While the other options signify the outcomes of having inadequate sleep like depression, reduced alertness of mind or cognitive functioning, obesity, etc. Thus, option C is the correct answer.