Correct option (2) Silicosis

Explanation

Silicosis is an occupational respiratory disorder which is caused due to excessive inhalation of silica dust. It usually affects the workers of grinding or stone breaking industries. The long-term exposure can cause lung fibrosis (or stiffening), Ieading to breathing difficulties.

Anthracis or Anthrax is a bacterial infection caused by Bacillus anthracis. Botulism is food poisoning infection caused by Clostridium botulinum. Its symptoms include diarrhoea, vomiting, abdominal distention, etc.

Emphysema is a lung disease, that damages the air sacs and causes shortness of breath. It may be caused by smoking, deficiency of enzymes alpha- 1-antitrypsin and air pollution.