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# The disease in which thick cough stops passage of throat by forming a layer of mucous membrane is

$\begin{array}{1 1}(A)\;\text{Diphtheria}\\(B)\;\text{Tuberculosis}\\(C)\;\text{Tetanus}\\(D)\;\text{Pertussis}\end{array}$

The disease in which thick cough stops passage of throat by forming a layer of mucous membrane is diphtheria
Hence (A) is the correct answer.