Answer:
C. offer a more unequal split ($900/$100) in order to gain more for herself and figuring Henry will accept the split because $100 is better than nothing.
Explanation:
Since in the question it is mentioned that the first round play $10 then for second it would be $1,000. Split ratio is 80 by 20 but the same is rejected by Henry
For understanding the behavioral economics, i.e decision making effects she should offer more unequal split i.e $900 by $100 so that she gain more as compared to Henry and at the same time Henry accept the $100 thinking that it is better than nothing
Hence, the correct option is c.