Correct Option: B  [ Dermatitis ]
Remark:
Nickel exposure commonly causes a skin disease called Dermatitis, specifically Allergic Contact Dermatitis. This condition occurs when the skin comes into direct contact with nickel-containing objects such as jewelry, coins, or belt buckles. It leads to redness, itching, and rashes, especially in sensitive individuals. Nickel allergy is one of the most common metal allergies worldwide.
Other options (for context)
- Itai Itai: Caused by cadmium poisoning, not nickel.
- Learning Disability: Not directly linked to nickel exposure.
- Asthma: May be aggravated by pollutants, but not typically caused by nickel.