Which number can volunteers call for tax law questions?

The correct choice is associated with the specific support line designed for volunteers who need assistance with tax law questions related to the Volunteer Income Tax Assistance (VITA) program. The number 800-829-VITA connects volunteers directly to resources and information that can help them address tax law inquiries, ensuring they can accurately assist taxpayers.

This line is specifically tailored for VITA volunteers, which means that the guidance provided is contextualized to the needs of volunteers working in this program. Understanding tax laws and having access to immediate support is crucial for volunteers as they strive to provide reliable and accurate assistance to those they serve.