Direction: Read the passage given below and answer the questions that follow, by selecting the most appropriate option-

The idea of evolution (which is gradual change) was not a new one. The Greeks had thought of it, so had Erasmus Darwin, the grand father of Charles Darwin, and also the Frenchman, Lamarck. It is one thing to have an idea, we can all guess and sometimes make a lucky guess. It is quite another thing to produce a proof of the correctness of that idea. Darwin thought he had that proof in his notebooks. He saw that all animals had to struggle to survive. Those which were best at surviving their environment passed on the good qualities which helped them to their descendants. This was called 'the survival of the fittest'. For example, in a cold climate, those who have the warmest fur will live. Darwin believed that this necessity for an animal to deal with its environment explained the immense variety of creatures.