What is the main idea of this selection?
A) Though some microbes can make people ill, many are quite helpful to humans.
B) Scientists have recently discovered microbes in and on the human body.
C) Microbes benefit people and the planet by cleaning up oil in the oceans.
D) Microbes are too small to see without using a powerful microscope.
Question & Answer
What is the main idea of this selection
1 Answer
Verified archiveThe correct answer is A) Though some microbes can make people ill, many are quite helpful to humans.
Explanation: This choice encompasses the main idea by acknowledging the dual nature of microbes — while some can cause illness, many play beneficial roles in human health and the environment. It reflects the overall message that not all microbes are harmful, highlighting their importance in various positive aspects.