Question

thursday the central ideal of a text is the most essential idea of a text. it is developed throughout the course of the text and supported by multiple supporting details. read the following paragraph and determine its central idea. write the central ideas below in a complete sentence. then, underline the supporting details. while smartphones have their advantages in a modern - day society, smartphone usage can be especially harmful for teenagers. first, smartphones can be addictive, making it difficult to focus on other areas of life. secondly, smartphones emit a harmful blue light that can interrupt natural sleeping patterns. teenagers should limit their use of smartphones.

Explanation:

The paragraph emphasizes smartphone - related harm to teens and suggests limiting use. The supporting details are addiction and blue - light issues.

Answer:

Smartphone usage can be especially harmful for teenagers and they should limit their use. Supporting details: Smartphones can be addictive; Smartphones emit harmful blue light.