Final answer:
Nadia's total private benefit, which is the sum of her consumer surplus and the amount she paid for halal meat, equals $300.
Step-by-step explanation:
Nadia's total private benefit is the sum of her consumer surplus and the amount she spends on halal meat.
Since she spends $100.00 and her consumer surplus is $200, her total private benefit would be the sum of these two amounts, which is $300.00.
The consumer surplus represents the extra value or satisfaction Nadia receives from purchasing the meat compared to what she paid for it, indicating that she valued the meat at $300 but only had to pay $100.