Which document serves as proof of identity when applying for a Texas CDL?

Answer: B — valid Texas driver's license

A valid Texas driver's license serves as proof of identity when applying for a Texas Commercial Driver's License (CDL) because it is an official government-issued document that includes your photo, name, and essential identifying information. This is crucial for verifying your identity during the application process, ensuring accuracy and authenticity. Since a driver's license is recognized as a reliable form of identification by state regulations, it simplifies the verification process for both the applicant and the authorities. While other documents like a Social Security card or a birth certificate can establish identity in specific contexts, they lack the additional features of a photo ID, which is a critical component in the CDL application process. A utility bill does not serve as proof of identity; instead, it is typically used to establish residency. Therefore, the validity and comprehensive identification features of a Texas driver's license make it the most appropriate choice for this purpose.