1. India, which has two out of every five TB patients in the world, is on the brink of a major public health disaster.
A. If untreated, a TB patient can die within five years.
B. Unlike AIDS, the great curse of modern sexuality, the TB germ is air-borne, which means there are no barriers to its spread.
C. The dreaded infection ranks fourth among major killers worldwide.
D. Every minute, a patient falls prey to the infection in India, which means that over five lakh people die of the disease annually.
6. Anyone anywhere can be affected by this disease.
This question may be slightly confusing as two or three arrangements will seem right. However, if you notice the last statement carefully "Anyone, anywhere can be affected by this disease"
The best sentence this should follow is one which talks about there not being any barriers to the spread of the disease, something which spreads very easily. Thus, B6 is the crucial link which will bring you to the logical sequence as CADB