Question

Birds of northern cold areas migrate southwards as the days

• A. Begin to shorten
• B. Begin to lengthen
• C. Become neutral
• D. None of the above

Answer 1

The correct option is A Begin to shorten

Birds of northern cold areas migrate southwards during winters as the days begin to shorten. They do so in order to get the suitable habitat and environment for their survival and to take advantage of burgeoning insect populations, budding plants and an abundance of nesting locations.

So, the correct option is 'Begin to shorten'.