Final Answer:
The first edition of the cornerstone was published in 1923 and the current edition is the 8th, thus the correct option is d.
Step-by-step explanation:
The cornerstone is a publication that has been around for a long time. Since its inception in 1923, it has gone through several updates and revisions to become the cornerstone that it is today. The first edition of the cornerstone was published in 1923, but since then it has gone through several updates and revisions. As of today, the 8th edition is the current one being used.
Throughout the years, the cornerstone has been tweaked and updated to keep up with the changing times. As new information became available, the cornerstone was updated to reflect this. This was done to ensure that the readers were getting the most up-to-date information available. The 8th edition of the cornerstone was released in 2020 and has been the most current edition since then.
In addition to updating the content, the cornerstone has also been updated to be more user friendly. The 8th edition has a more intuitive layout, which makes it easier for readers to find the information they are looking for. The organization of the content is also more streamlined, making it easier to find specific topics. The 8th edition also includes a variety of illustrations and diagrams that help readers better understand the topics discussed in the cornerstone.
Overall, the cornerstone has gone through numerous updates and revisions since its first edition in 1923. The cornerstone is now in its 8th edition, which was released in 2020. This edition includes a variety of updates and revisions that make it more user friendly and up-to-date with the latest information.