$**$Objective Type Question:$**$

Which of the following is a key requirement for compliance with IRS regulations for tax$-$exempt status?

a$)$ Filing quarterly financial reports with the IRS.

b$)$ Limiting the organization's charitable activities to a single geographic region.

c$)$ Using tax$-$exempt funds for personal expenses of the organization's directors.

d$)$ Meeting the IRS's criteria for operating exclusively for charitable, educational, or other exempt purposes.