What is the main idea of the passage?

Question

Option 1: Our houses are full of contaminants.

Option 2: Any plant in the house is welcome.

Option 3: All plants release moisture in the home.

Option 4: Certain plants can purify the home of many harmful chemicals.

AfterBoards · Accepted Answer

**Option 4: Certain plants can purify the home of many harmful chemicals** → Correct ✅ The main idea is the "big umbrella" message that covers everything in the passage. Here, the passage talks about how specific plants act like natural air cleaners by removing harmful chemicals from our homes. This option captures both the problem (harmful chemicals) and the solution (certain plants that purify the air). Let's confirm by checking why the other options don't work: **Option 1** → Only mentions the problem (contaminants) but ignores the solution (plants that clean the air). Too incomplete to be the main idea. **Option 2** → Too vague. The passage doesn't talk about *any* plant — it focuses on *certain* plants that help clean the air. **Option 3** → Releasing moisture is just a small detail, not the big picture of the passage.

What is the main idea of the passage?

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