Question : Select the most appropriate option that can substitute the underlined segment in the given sentence. If there is no need to substitute it, select "No substitution".
Greenhouse gases trapped beside Earth's atmosphere cause global warming.
Option 1: trapped inside
Option 2: No substitution
Option 3: trapped outside
Option 4: trapped beyond
Correct Answer: trapped inside
Solution : The correct answer is the first option.
The phrase "trapped beside Earth's atmosphere" does not convey the intended meaning. So, the corrected sentence conveys that greenhouse gases are "trapped inside" the Earth's atmosphere and are contributing to global warming.
The prepositions in the other options, "beyond" and "outside," do not effectively convey the intended meaning.
Thus, the correct statement is "Greenhouse gases trapped inside Earth's atmosphere cause global warming."
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