Which laboratory is located in San Antonio, Texas?

Omega Point Laboratories is the correct answer because it is specifically known to be located in San Antonio, Texas. This laboratory provides a range of testing services, including those related to compliance with firestop systems and materials, which are crucial for ensuring safety and performance in construction. Having a facility in San Antonio allows Omega Point Laboratories to serve clients in the region effectively.

The other options represent reputable testing organizations but are not located in San Antonio. Underwriters Laboratories Inc. is a well-known safety certification organization, but it operates multiple facilities in various locations, predominantly outside Texas. Underwriters Laboratories of Canada focuses on the Canadian market and standards. Internet Testing Services may provide services related to various industry standards, but it is not tied to the San Antonio location as Omega Point Laboratories is. This geographic specificity is essential for understanding the operations and relevance of each testing facility.