Which of the following are the possible harmful effects of inhaling solvent? (I) Addiction to inhaling solvents (II) Brain damage (III) causing illusion

All of the options listed can potentially be harmful effects of inhaling solvents.

(I) Addiction to inhaling solvents: Solvents can be addictive. When inhaled, they can produce a high that makes the user want to continue using them, leading to addiction.

(II) Brain damage: Chronic inhalation of solvents can lead to serious health problems, including brain damage. The chemicals in solvents can cause changes in brain chemistry and structure, leading to cognitive and motor function impairment.

(III) Causing illusion: Solvents can alter perception, causing hallucinations or illusions. This can be dangerous as it can lead to risky behavior or accidents.

So, the answer is (I), (II), and (III).