Farmers lung is caused by -
Ans. is 'a' i.e., Micromonospore faenia Spores of some thermophilic actinomycetes such as faenia and Saccharomonsporia species may induce allergic alveolitis leading to COPD,farmer's lung.
Micromonospore faenia
Aspergillosis
Histoplasma capsulatam
All of the above