Directions (For the items which follow) :
In this Section you have Eight short passages. After each passage, you will find several questions based on the passage. First, read a passage, and then answer the questions based on it. You are required to select your answers based on the contents of the passage and opinion of the author only.
PASSAGE - I
Popular illusions about birds extend further than the use of the word 'egg-shape' that would suggest that all eggs are alike. For instance, there is the popular idea that owls hoot. Actually, only very few owls hoot arid these include the common brown or tawny wood owl. The white barn owl screeches, the little owl has a wailing cry, the long-eared owl barks, and the short-eared owl snorts ! Another mistaken idea is that all ducks 'quack', because the common farmyard duck is a domesticated form of the common wild duck or mallard that quacks. Actually most wild ducks call with whistles.
The main purpose of this passage is

Options

A. to describe the life of popular birds.
B. to show our incorrect ideas of bird life.
C. to show our perfect knowledge about birds.
D. to describe the calls of owls and ducks.