Which of the following practices can make a group's decision-making process more effective?
a. permitting member roles to remain uncertain.
b. requiring agreement that the decision is the optimal one.
c. forming smaller groups and working groups.
d. promoting the use of groupthink.

answer; /// i believe the correct answer is (b) disposition

in 342 bc j._c. egypt fell into the hands of the persians, under the reign of nectanebo ii

greek city-states unite in a revolt against the persian empire at the beginning of the fifth century bc. j.-c  

from the year 660 or 659 bc ad, cyrus preached the revolt against the medes to deliver the persians.