Which of the following is responsible for Sorter's disease? 

Anthrax 

The correct answer is option 1. Anthrax.

Out of the options listed, Bacillus is the culprit responsible for Sorter's disease. However, it's important to note that Bacillus is a genus of bacteria, and the specific species that causes Sorter's disease is Bacillus anthracis.

Sorter's disease is another name for inhalation anthrax, the most severe form of anthrax infection. It occurs when people inhale the spores of Bacillus anthracis bacteria. These spores can remain dormant in the environment for decades and become airborne when disturbed, such as during activities like sorting wool from infected animals.

Here are some key points about Sorter's disease:

Symptoms typically develop within 7 days of exposure and may include fever, shortness of breath, chest tightness, cough, and fatigue.

Early diagnosis and treatment with antibiotics are crucial for improving the chances of survival.

Sorter's disease is rare in developed countries due to animal vaccination programs and safety precautions in industries that handle animal products.

It's important to remember that Silkworm is an insect and not related to bacterial diseases like Sorter's disease.