Subject :NSO Class : Class 3
Which invention has been the most helpful in allowing people to communicate quickly with each other?
(A) 
(B) 
(C) 
(D) 
Ans 1:
Class : Class 3
The correct answer is B
Ans 2:
Class : Class 3
The correct answer is B
Ans 3:
Class : Class 3
The correct answer is B
Ans 4:
Class : Class 3
B
Ans 5:
Class : Class 3
B
Ans 6:
Class : Class 3
The correct answer is B