أنشئ حسابًا أو سجّل الدخول للانضمام إلى مجتمعك المهني.
a. upward communication.
b. horizontal communication.
c. downward communication.
d. the grapevine.
My answer is same as other experts, which is option (D)
>>>>>>>>>>>> d. the grapevine. >>>>>>>>>>>>>>>>
Agree with professionals.....
answer D ___________________________________
d. >>>>>>>>>>>>>>>>> the grapevine.
Option -----------------------D
Thanks
The answer is :Option ( D )