Determining Central Idea in Informational Text - Level F - Quiz
Which of these details does NOT support the central
idea?
Central Idea: Even though one of Edison's inventions failed, he never stopped
trying out new ideas.
The vocal engine was a cumbersome device for the
user.
The voca
The vocal engine had a few fatal flaws.
Sound waves are not powerful enough to make the
vocal engine useful.
+) Edison created a version of the light bulb that
was affordable and long-lasting.