Question

what is the central idea of the text? a. blue light from some leds can be harmful. b. the international dark - sky association (ida) is working to restore dark night skies. c. excessive artificial light is causing our view of the night sky to disappear. d. too much artificial light disrupts animal migrations and reproduction.

Explanation:

Without the actual text, we assume the main - idea is about the impact of artificial light on the night - sky. Option C directly addresses how excessive artificial light is causing the view of the night sky to disappear, which is a comprehensive central idea compared to other more specific options.

Answer:

C. Excessive artificial light is causing our view of the night sky to disappear.