NASA currently has plans to have a man on Mars sometime in the 2030s, while ESA plans to do so also around the same time. Here, "2030s" is referred to as

first quarter of 20th century

second quarter of 20th century

second quarter of 21st century

third quarter of 20th century

উত্তর সিলেক্ট করলে সঠিক ও ভুল দেখাবে।

ব্যাখ্যা ও সঠিক সমাধান

উত্তর: second quarter of 21st century

বিস্তারিত সমাধান