Which of the following is an example of an international standard?

The selection of ISO as the correct answer is based on its status as an internationally recognized organization that develops and publishes various standards across different industries and sectors. The International Organization for Standardization (ISO) establishes guidelines that are relevant and applicable on a global scale, making its standards widely accepted and recognized across multiple countries and regions.

In contrast, ASTM (American Society for Testing and Materials) primarily focuses on standards in the United States, even though some of its standards are adopted internationally. ANSI (American National Standards Institute) is another U.S.-based organization that oversees the development of voluntary consensus standards for various sectors but does not operate at an international level like ISO. ABAA (Air Barrier Association of America) is specific to the air barrier industry in North America and does not produce international standards. Thus, ISO distinctly represents an international standard-setting body, making it the appropriate choice.