Event (A): Due to mechanisation the life of human beings is becoming more comfortable in urban areas.
Event (B) : Life is becoming insecure in urban areas.

A

Give answer (A) if ‘A’ is the effect and ‘B’ is its immediate and principal cause

B

Give answer (B) if ‘A’ is the immediate and principal cause and ‘B’ is its effect

C

Give answer (C)if ‘A’ is an effect but ‘B’ is not its immediate and principal cause

D

Give answer (E) if ‘B’ is an effect but ‘A’ is not its immediate and principal cause

E

None of these