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During the bleak winter months, when gardens lie dormant, and trees are bare, the vibrant green of houseplants can be a soothing balm for our spirits. Many people visit garden stores to reconnect with nature and breathe in the freshness that reminds them of spring.

With growing awareness about the harmful chemicals we introduce into our homes, like those from dry cleaning and various cleaners, there's an increasing need for plants that can improve indoor air quality. Many household products release chemicals such as formaldehyde, chlorine, and benzene, which can mimic allergy symptoms during winter when windows are shut. This reaction may stem from Multiple Chemical Sensitivity. Fortunately, research shows that certain houseplants can help filter these harmful substances, promoting a healthier living environment.
Ferns and palms are effective at removing chemicals from the air in homes. They release moisture during photosynthesis, drawing pollutants into their leaves. NASA has even found that palms can eliminate traces of formaldehyde quickly in controlled environments. Both plants are ancient, over a hundred million years old, and can live for 100 years or more. Their longevity and ability to grow tall (up to 65 feet) may enhance their environmental purifying qualities.

The passage infers a relationship between the antiquity of ferns and palms and their ability to

Solution

✅ Correct Option: 2

Option 2 (purify the air) is correct.

The passage suggests that because ferns and palms are extremely ancient plants (they've existed for millions of years), they have had a very long time to develop and perfect their ability to clean the air. Think of it like practice — the longer you practice something, the better you get at it! These plants have been "practicing" air purification for millions of years, making them especially good at it.

Why not the other options?

  • Option 1 (live long): The passage connects their antiquity to air purification, not to how long individual plants survive.
  • Option 3 (grow leaves that live long): The passage makes no connection between their ancient history and the lifespan of their leaves.
  • Option 4 (react successfully in research experiments): The passage does not link their ancient history to how they perform in lab settings.

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