Which of the following characteristics of living things best explains why birds fly south for the winter?

The correct option is A) Living things respond to their environment.

The following information should be considered:

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The correct option is A) Living things respond to their environment.

Explanation:

All living things tend to respond to the environment in some way or the other. When any change arises in the environment, it acts as a stimulus for the organism. A response is generated by the organism by detecting this stimulus.  For example, the weather is an environmental condition. When the weather becomes unfavourable for birds, they fly o the south where the weather conditions are better so that they can protect themselves from the excessive cold weathers. Such practices allow organisms to survive on the Earth.