D. Cambodia (mostly), Thailand, Vietnam
The summer monsoon generally begins in April and lasts through late September, while the winter monsoon arrives
in October and ends in March.
Delhi New York, USA they named it after the Indian capital
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Nitrogen (78%), Oxygen (21%), Argon (0.9%), and the remaining 0.1% consists of traces of neon, krypton xenon, carbon dioxide, nitrogen oxides, and traces of others. so Nitrogen is the greatest. I hope this helps :)