Final answer:
Fundraising events are an example of an increase in net assets for a not-for-profit organization that would be labeled as revenue.
Step-by-step explanation:
An example of an increase in net assets for a not-for-profit organization that would be labeled revenue rather than support is fundraising events.
While donations from individuals, government grants, and investment income are all sources of support for a not-for-profit organization, fundraising events involve selling goods or services at a profit, which is classified as revenue.