Toll goods differ from public goods in that
they provide special access to some and not all
they require the payment of a fee up front
they provide a service for only the wealthy
they are free and available to all

They require the payment of the fee upfront.

Explanation:

Toll goods  can be defined as those goods that can be be excluded and the consumption of the toll goods and services are not reduced if some one else uses it i.e., it is not incorrect to say that these goods are non rivalrous.

Private sector may cover a part of the cost covered by toll good.

9) a & b

10) true.

11) false.

12) false.

13) true.

14) false.

15) true.

16) true.

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