Since the answer choices cannot be found online, we can use our own words to describe the main idea, which will be helpful for you to choose the correct answer.
The main idea is the following:
There are two types of iron, one from plant sources, one from animal sources, but the iron from plant sources is not well absorbed by the human body.
<h3>What is a main idea?</h3>
The main idea of a paragraph or text is the most important message that the author wants to convey. Here, we must find the main idea in the passage about two kinds of iron. Since we do not have the answer choices - and they couldn't be found online -, we will use our own words to describe the main idea.
After reading the passage, we can divide it into the following topics:
- One kind comes from plants.
- Another kind comes from animals.
- The plant kind is not well absorbed by the human body.
- The animal kind is better absorbed by the human body.
Putting those topics together, we can form the main idea. Let's do our best to avoid unnecessary repetition:
- There are two types of iron, one from plant sources, one from animal sources, but the iron from plant sources is not well absorbed by the human body.
With the information above in mind, we can conclude that the main idea provided above is appropriate for the passage we analyzed here.
Learn more about main ideas here:
brainly.com/question/1119015
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