The sports and entertainment industry generates revenue directly through all of the following except

a: corporate sponsorships

b: event marketing

c: sales of ancillary products

d: discretionary income

D. Discretionary income is the correct answer.

Explanation:

Discretionary income is the income left after making all the necessary payments such as rent, medicine, insurance, transportation and tax etc. While the sports entertainment industry doesn't depend on discretionary income, it generates significant revenue from  corporate sponsorship, event marketing  and sales of ancillary products(add on products that one can purchase in addition to the event tickets)

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