The answer to this is B. The Blue-Crowned Conure is one of the birds that people would like to have not only because of its appearance but also because of its intelligence. This can be taught with a large vocabulary as long as its owner will be patient and persistent. In due time, the bird may start talking very well.
A lot of people find talking birds appealing regardless of whether the birds are making sense or not. Their level of intelligence can be determined by how well they can speak and the number of words that they know. The other birds that are given as choices for this question are well-loved in their own unique abilities.