Which of the following would be considered the main idea of the following passage?

Question

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1 point
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Birds are attracted to the steady red lights on communication towers.
To save birds, communication towers have begun using blinking lights.
Birds and communication towers are important for pilots.
There is no need for communication towers.

Answer 1

The main idea of the passage is: "To save birds, communication towers have begun using blinking lights." This statement directly addresses the issue presented (the attraction of birds to steady red lights) and provides a solution (the use of blinking lights) that relates to the protection of birds.