Answer:
Asians is the largest and most populated continent and the birthplace of many religions including Buddhism, Christianity, Confucianism, Hinduism, Islam, Jainism, Judaism, Shinto, Sikhism, Taoism, and Zoroastrianism.
Explanation:
I hope this helped you ;)
Let's take as an example the behavior of some birds, for example Storks. They live in Northern Europe in the Summer but travel South during the winter. This behaviour is actually called a seasonal migration and is dependent on the change of seasons - so the correct answer is a)