In following Questions, you have a passage with 10 questions following the passage. Read the passage carefully and choose the best answer to each question out of the four alternatives.

Animals do not know worry. What bird could raise a family if it worried about the problems to be overcome, the impossible numberof feeding trips in a day to keep those clamouring mouthsstilled with food ? That is not the way birds or animals respond to life. Nature says “Feed them !” and the mother bird goes ahead and does it. Between dawn and sunset a tiny wren must make hundreds of such round trips to feed her brood.

An animal doesn’t know’ what brotherhood means, but when it hears the call “Help !” it answers instinctively. If a prairie dog is shot, the others in theprairie dog village come tumbling out, not worried about gunfire and pull their wounded fellow underground. Big-game hunters have seen elephants, disregarding danger, lift a wounded elephant to his feet with their tusks and by supporting him with one memberof the herd on eachside, help him, walk to the forest depths.