Direction: In this section, you have short passages. passage is followed by questions based on the passage. First, read the passage and answer the questions based on the passage. You are required to select your answers from the given options.

Many doctors flatly refused to believe Jenner when he announced that he had found a preventive against smallpox. They declared vaccination to be a dangerous practice. But the dread of smallpox was in everybody's heart, and people flocked to Jenner to be vaccinated. The Latin word for cow is 'vacca'; it is the root from which the word vaccination was formed. Some of the 'vacca' used by Jenner were not pure and some harms were done; but when supplies of pure vaccine were available, the practice of vaccinating spread all over England and from England to other countries. We hardly hear of outbreaks of smallpox now.