Approximately,
25 people would eat 10 pounds of chicken with borne.
Therefore, this is a question of how many chicken with borne would 160 people require.
Then, this is a question of proportionality knowing the base values. That is;
25 guests ------- 10 pounds
160 guests ------ x pounds
Therefore,
x = (160*10)/25 = 64 chicken.
In this regard, 64 chicken with borne would be required to feed 160 guests in this scenario and correct answer is b.