Multiple choice

When the author says,��� but this would require of the animals a fantastic map sense�, it means that the author is

  1. praising the map sense of the migratory birds

  2. certain that the phenomenon of migration will remain strange

  3. skeptical about celestial navigation as an explanation for the navigational skills of migratory birds

  4. showing interest in various ways accounted for the navigation sense of various trans migratory birds

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The ending lines of the second paragraph imply that the author thinks that birds are not capable of having such map sense. In other words, he is skeptical about the theory that birds determine their migratory routes using the position of the Sun and the stars. So, (3) is the answer.