Identify the missing word:
Scientists have long known that soot particles facilitate melting darkening snow and ice limiting its ability to reflect the sun’s rays.
Scientists have long known that soot particles facilitate melting darkening snow and ice limiting its ability to reflect the sun’s rays.
Solution
Correct Answer: Option D
Facilitate something by doing something সঠিক ধারা। সুতরাং darkening-এর পূর্বে by বসালে বাক্যটি সঠিক হবে।
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